[ Sitemap ] [ Kontakt ] [ Impressum ] [ ] Volltext Suche Chemie


Home


Weiteres zum Thema:

Komplexchemie

Koordinationschemie

Metallorganische Chemie

Buecher zum Thema


Themenbezogene Artikel

- Chemie, allgemein

- Metallorganische Chemie

Weitere Themenbereiche

English Version


Verwandte Themen:


Aktuelles

Chemie Nachrichten

Stellenmarkt Chemie

Chemie Konferenzen


Chemie A bis Z

Index Chemie

Chemikalien

Internetchemie Lexikon

Produkte und Firmen


About Internetchemie

Internetchemie

Impressum

Service




Komplexchemie und Koordinationschemie - Aktuelle Forschungsartikel


 
Komplexchemie - Aktuelle Forschungsartikel zum Thema Komplexchemie und Koordinationschemie

Die Urheberrechte und Veroeffentlichungsrechte der in der nachfolgenden Liste aufgefuehrten Fachartikel liegen bei den jeweiligen Verlagen, die am Ende des jeweiligen Artikels als Quelle genannt werden. Diese sind auch fuer die Inhalte verantwortlich.

Hinweise zur Veroeffentlichung Ihrer Pressmitteilung unter Internetchemie.Info entnehmen Sie bitte der entsprechenden Info-Seite.

Diese Seite koennen Sie mit folgender Tastenkombination nach Stichwoertern durchsuchen: <STRG> und <F>.


Auf dieser Seite beruecksichtige naturwissenschaftliche Journale:


Journal of Coordination Chemistry - published by Taylor and Francis -
... publishes the results of original investigations involving the physical and chemical properties, syntheses and structures of coordination compounds.

Russian Journal of Coordination Chemistry - published by Springer -
... presents reviews, original papers, and communications on all aspects of theoretical and experimental coordination chemistry.

Coordination Chemistry Reviews - published by Elsevier -
... offers rapid publication of review articles on topics of current interest and importance in coordination chemistry



Aktuelle wissenschaftliche Fachartikel der genannten Journale:


Two Cd(ΙΙ) complexes with xanthene-9-carboxylate ligand: syntheses, crystal structures, and emission properties

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and mesomorphic properties of symmetric tetradentate Schiff bases based on azo-containing salicylaldimines and their copper(II) complexes

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Bimetallic organotin(IV) complexes with ferrocene-based azomethines: synthesis, characterization, semi-empirical study, and antibacterial activity

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Supramolecular architecture built of Co(II) and a tripodal ligand containing 1-D water tapes with (H 2 O) 16 cluster units

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis of 1-substituted benzimidazole metal complexes and structural characterization of dichlorobis(1-phenyl-1 H -benzimidazole- κN 3 )cobalt(II) and dichlorobis (1-phenyl-1 H -benzimidazole- κN 3 )zinc(II)

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Luminescent triply-bridged dicopper(I) complex possessing 3,5-bispyrazole as a bis-chelating ligand

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Metal-based antibacterial agents: synthesis, characterization, and in vitro biological evaluation of cefixime-derived Schiff bases and their complexes with Zn(II), Cu(II), Ni(II), and Co(II)

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, crystal structures, and properties of two heterometallic Cu(II)-M(II) (M = Zn, Ni) oxamidato-bridged coordination complexes

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and structural characterization of three zinc coordination complexes based on 3,5-dimethylpyrazole and carboxylate ligands

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Two photoluminescent pentanuclear homo- and hetero-metal complexes based on benzotriazole bridge

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and physico-chemical study of complexation of glyoxylic acid aroylhydrazones with Cu(II) in solution and solid phase

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Metal complexes of porphyrin-anthraquinone hybrids: DNA binding and photocleavage specificities

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, crystal structure, spectroscopy, and nuclease activity of copper(II) complexes containing N , N -bis(2-pyridylmethyl)amine ligand

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, structure, and magnetism of a new 2-D copper(II) complex based on two different dicarboxylates

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Syntheses, crystal structures, and catalytic activities of three new Cu(II) coordination polymers based on 2-(1H-1,2,4-triazole)-1-acetic acid

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, crystal structure, and magnetic properties of a phenoxo-bridged dinuclear nickel(II) complex

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and characterization of a new cyclic phosph(V)azane ligand [(C 6 H 5 N)P(O)H] 2 and its zinc(II) complex

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and characterization of some potential antitumor palladium(II) complexes of 2-aminomethylbenzimidazole and amino acids

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Four new Co(II) complexes with 2-amino-4-methylpyridine, 2-amino-3-methylpyridine, or 2-amino-5-chloropyridine: synthesis, spectroscopy, magnetic properties, and crystal structure

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and structural characterization of diiron azadithiolate complexes relevant to the active site of [FeFe] hydrogenases

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Designing nickel phthalocyanine periphery by alkyl chain via [1,3,4]-oxadiazole

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Self-assembly of new Zn(II) supramolecular complexes from 4,4'-dipyridyldisulfide

Quelle: Journal of Coordination Chemistry: Articles recently published in |

A Schiff-base porphyrin complex with double intramolecular hydrogen bonds

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, crystal structure, and magnetic properties of a linear trinuclear Cu(II) complex

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis and evaluation of antioxidant and antibacterial properties of morin complexes

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Cadmium and tin complexes of Schiff-base ligands

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, structure, DNA binding, and cleavage activity of two copper(II) complexes

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Structural study on a sulfido-bridged dinuclear organotin(IV) complex with weak Sn ··· Sn bonding

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, structure, and magnetism of four polyoxomolybdate compounds containing yttrium and ytterbium

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Spectroscopy studies on DNA binding of two ruthenium complexes [Ru(MeIm) 4 (L)] 2+ (L = iip and tip)

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Crystal engineering of Cd(II) metal-organic frameworks bridged by dicarboxylates and N-donor coligands

Quelle: Journal of Coordination Chemistry: Articles recently published in |

A self assembled 3-D network propagated by coordination polymerization and H-bonding: synthesis and X-ray crystal structure of [(ClO 4 ) 2 (CH 3 COCH 3 ) 2 (H 2 O) 2 ] n , where L = N,N-diisopropylisonicotinamide

Quelle: Journal of Coordination Chemistry: Articles recently published in |

A new luminescent 3-D metal-organic framework of diamond-like network possessing 8-fold interpenetration

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, spectroscopic, and biological activities of two binuclear complexes [Cu(II)(1-phenylamidino-O-methylurea) 2 (H 2 O)] 2 (Cl 2 ) 2 and [Cu(II)(1-phenylamidino-O-i-butylurea)tmen] 2 (Cl 2 ) 2 ·2H 2 O

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, characterization, and antibacterial activity of a manganese(II) complex of triaryltriazole

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, stereochemistry, and spectroscopic characterization of [Rh(η 4 -cod)](acetate) (X = H; 2,4-dimethoxy)

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Greener solid state synthesis of a ternary lanthanum complex at room temperature

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Crystal structures and DNA cleavage activities of two mononuclear nickel(II) complexes

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, structure, and properties of a coordination polymer based on N- and O-donors

Quelle: Journal of Coordination Chemistry: Articles recently published in |

The first in situ tetrazole synthesis of lanthanide metal coordination frameworks

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Axial extension of trinickel string complex by 1,4-benzenedicarboxylate: synthesis, structure, and magnetism of n

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, characterization, and antibacterial activity of two silver(I) compounds with 4-dimethylaminopyridine

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, characterization, NLO study, and antimicrobial activities of metal complexes derived from 3-(3-(2-hydroxyphenyl)-3-oxoprop-1-enyl)-4H-chromen-4-one and sulfanilamide

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Template construction of a series of supramolecular coordination polymers via 6,7-dihydro-5H-[1,4]diazepino[1,2,3,4-lmn][1,10]phenanthroline-4,8-diium cation

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, characterization, and cytotoxicity of mixed-ligand complexes of platinum(II) with 2,2'-bipyridine and 4-toluenesulfonyl- L -amino acid dianion

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, spectral, bioactivity, and NLO properties of chalcone metal complexes

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Four anthraquinone-1,5-disulfonate-based metal complexes incorporating N-heterocyclic coligands: synthesis, crystal structures, and fluorescence

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Syntheses and structural characterization of two metal-organic frameworks from tripodal and dipodal ligands

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Zirconium complexes in homogeneous ethylene polymerization

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Synthesis, characterization, and immobilization of nickel(II) tetradentate Schiff-base complexes on clay as heterogeneous catalysts for the oxidation of cyclooctene

Quelle: Journal of Coordination Chemistry: Articles recently published in |

Topological systematization of layered coordination compounds of Cu, Ag, Zn, and Cd

Abstract  
The topological analysis and systematization of basis lattices in 1972 coordination compounds of Cu, Ag, Cd, and Zn containing organic ligands and layered complex groups (both isolated and interlaced with each other) are carried out by the TOPOS structural topological program package. The structures considered are most frequently based on the square (sql) or hexagonal (hcb) Shubnikov lattice (38.6 and 18.7%, respectively). The increased specificity of the sql and hcb lattices is due to specific features of coordination of the lattices facilitating their mutual penetration. Two types of interlacing of the layered groups (parallel and inclined) are revealed, and the former predominates.

  • Content Type Journal Article
  • Pages 309-314
  • DOI 10.1134/S1070328412040082
  • Authors
    • T. G. Mitina, Samara State University, Samara, Russia
    • D. R. Khamitova, Samara State University, Samara, Russia
    • V. A. Blatov, Samara State University, Samara, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Synthesis and crystal structures of 1,2-diaminobenzene-Ni complexes

Abstract  
Treatment in different proportions of 1,2-diaminobenzene with Ni(OAc)2 · 4H2O in methanol results in the formation of two 1,2-diaminobenzene-Ni complexes I (C92H134N24Ni9O28) and II (C16H22N4NiO4). Their structures were determined by X-ray diffraction analysis. The complexes are also characterized by elemental analysis and IR.

  • Content Type Journal Article
  • Pages 337-341
  • DOI 10.1134/S1070328412050077
  • Authors
    • L. Mei, Hefei University of Technology, Hefei, 230009 P.R. China
    • L. S. Tai, Hefei University of Technology, Hefei, 230009 P.R. China
    • Z. S. Ming, University of Science and Technology of China, Hefei, 230009 P.R. China
    • S. Jie, Shanghai Institute of Organic Chemistry, Shanghai, 200032 P.R. China
    • L. Q. Rong, University of Science and Technology of China, Hefei, 230009 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Stereoisomeric Pt(IV) complexes with threonine

Abstract  
Stereoisomeric Pt(IV) complexes with threonine (ThrH = HOCH(CH3)CH(NH2)COOH, α-amino-β-hydroxybutyric acid) were obtained. In the complexes trans-[Pt(S-ThrH)2Cl4] and trans-[Pt(R-ThrH)(S-ThrH)Cl4], the ThrH molecules act as monodentate ligands coordinated through the NH2 group. In the complexes cis- and trans-[Pt(S-Thr)2Cl2] and trans-[Pt(R-Thr)(S-Thr)Cl2], the deprotonated ligands are coordinated in a bidentate fashion through the NH2 and COO-groups (R,S is the absolute configuration of the asymmetric carbon atom). All the complexes were identified using elemental analysis, IR spectroscopy, and 195Pt, 13C, and 1H NMR spectroscopy. The complexes trans-[Pt(S-ThrH)2Cl4] · 3H2O and cis-[Pt(S-Thr)2Cl2] · 2H2O were additionally characterized by X-ray diffraction.

  • Content Type Journal Article
  • Pages 363-372
  • DOI 10.1134/S1070328412040069
  • Authors
    • L. F. Krylova, Novosibirsk State University, Novosibirsk, Russia
    • L. M. Kovtunova, Novosibirsk State University, Novosibirsk, Russia
    • G. V. Romanenko, Institute “International Tomography Center”, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
    • L. A. Sheludyakova, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Complexation in the heparin-metal ion system

Abstract  
The reaction of high-molecular weight heparin with Mn2+, Ni2+, Fe3+, and Co2+ in aqueous solution at 37°C with 0.154 M NaCl as the supporting electrolyte was studied by pH-metry and mathematical modeling. The formation of complex species of different compositions and stabilities was detected. The stability constants of the complexes were determined.

  • Content Type Journal Article
  • Pages 373-378
  • DOI 10.1134/S1070328412040033
  • Authors
    • M. A. Feofanova, Tver State University, Sadovyi per. 35, Tver, Russia
    • Yu. V. Frantseva, Tver State University, Sadovyi per. 35, Tver, Russia
    • S. V. Lapshin, Tver State University, Sadovyi per. 35, Tver, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Synthesis and crystal structure of a new nickel(II) coordination polymer based on Schiff base

Abstract  
A new Schiff base coordination polymer, [Ni(C18H16N3O2)2 · 2CH3OH] n (C18H16N3O2, 2-acetylpyridine-L-tryptophan), was synthesized and characterized by IR, UV, and X-ray diffraction singlecrystal analysis. The crystal crystallizes in the tetragonal crystal system, space group P43212 with cell parameters a = 11.8912(11), c = 28.822(3) Å, V = 4075.5(6) Å3, Z = 4, F(000) = 1544, S = 1.187, ρcalcd = 1.199 g cm−3, μ = 0.525 mm−1, the final R 1 = 0.0515 and wR 2 = 0.1513 for 3602 observed reflections (I > 2σ(I)). The Ni(II) atom is six-coordinated by two nitrogen atoms from C=N, two nitrogen atoms from pyridine rings and two carboxylic oxygen atoms in different ligands, forming a distorted octahedron geometry. Each ligand serves as a bridging ligand to link Ni2+ ions through carboxylic oxygen atoms, leading to a two-dimensional coordination polymer.

  • Content Type Journal Article
  • Pages 349-352
  • DOI 10.1134/S1070328412050119
  • Authors
    • N. Zhang, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100 P.R. China
    • Y. H. Fan, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100 P.R. China
    • C. F. Bi, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100 P.R. China
    • J. Zuo, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100 P.R. China
    • Q. Wang, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Metal exchange reaction of cadmium 5-monoaza-2,3,7,8,12,13,17,18-octamethylporphyrinate with zinc(II) and copper(II) chlorides in dimethyl sulfoxide

Abstract  
The metal exchange reactions of cadmium 5-monoaza-2,3,7,8,12,13,17,18-octamethylporphyrinate with CuCl2 and ZnCl2 in dimethyl sulfoxide (DMSO) were studied by spectrophotometry. The kinetic and energy parameters of the metal exchange reaction were determined. The possible stoichiometric mechanism of the metal exchange reaction was proposed. A comparative analysis of the reaction rate constants obtained for the metal exchange and for the complex formation of 5-monoaza-2,3,7,8,12,13,17,18-octamethylporphyrin with the same salts in DMSO was performed.

  • Content Type Journal Article
  • Pages 319-324
  • DOI 10.1134/S1070328412050120
  • Authors
    • S. V. Zvezdina, Institute of Solution Chemistry, Russian Academy of Sciences, ul. Akademicheskaya 1, Ivanovo, 153045 Russia
    • N. Zh. Mamardashvili, Institute of Solution Chemistry, Russian Academy of Sciences, ul. Akademicheskaya 1, Ivanovo, 153045 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Synthesis, crystal structure, and interaction with DNA of a novel coordination polymer: [Cd(Pmal)(Bipy)] · 4H2On

Abstract  
A novel coordination polymer {[Cd(Pmal)(Bipy)] · 4H2O} n (I), where Bipy = 2,2′-Bipyridine, Pmal = phenethylmalonate, has been synthesized and characterized using IR, 1H NMR, elemental analysis, and single-crystal X-ray diffractometry. The unit cell parameters for complex I: a = 12.3752(15), b = 6.8283(9), c = 13.4739(17) Å, β = 91.108(2)°, V = 1138.4(2) Å3, Z = 2, space group P21. The binding of complex I with fish sperm DNA (FS-DNA) was investigated by fluorescence spectroscopy, showing that the complex has the ability of interaction with DNA. Gel-electrophoresis assay demonstrates the ability of complex I to cleave the pBR322 plasmid DNA.

  • Content Type Journal Article
  • Pages 325-330
  • DOI 10.1134/S1070328412040045
  • Authors
    • E. J. Gao, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • B. Wang, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • L. Lin, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • T. D. Sun, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • Z. Wen, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • S. H. Liu, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • Y. Wang, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • R. S. Wang, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • Y. Zhang, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • M. Zhang, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • Y. X. Zhang, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • M. C. Zhu, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China
    • L. Liu, Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Synthesis and study of cobalt(II), nickel(II), and copper(II) complexes with 4-(4-hydroxyphenyl)-1,2,4-triazole

Abstract  
New complexes of Co(II), Ni(II), and Cu(II) nitrates, chlorides, and perchlorates with 4-(4-hydroxyphenyl)-1,2,4-triazole (L) were obtained and examined by single-crystal X-ray diffraction, X-ray powder diffraction, and electronic absorption and IR spectroscopy. The cations of all the complexes have linear trinuclear structures. Ligand L is coordinated to the metal ions in a bidentate bridging fashion through the N(1) and N(2) atoms of the heterocycle. The coordination polyhedron of the metal atoms is a distorted octahedron. The molecular and crystal structures of the complexes [Co3L6(H2O)6](ClO4)6 · 3C2H5OH · 3.75H2O and [M3L6(H2O)6](ClO4)6 · 6H2O (M = Cu2+ and Ni2+) were determined.

  • Content Type Journal Article
  • Pages 353-362
  • DOI 10.1134/S1070328412050065
  • Authors
    • E. V. Lider, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • E. V. Peresypkina, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • L. G. Lavrenova, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • L. A. Sheludyakova, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • A. I. Smolentsev, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • T. I. Yaroshenko, Favorsky Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia
    • V. N. Elokhina, Favorsky Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Two new oxamidato-bridged CuII-CuII complexes: Synthesis, structure, spectra, and cyclic voltammetry studies

Abstract  
New oxamido-bridged binuclear CuII-CuII complexes, [Cu(Oxen)Cu(Bipy)2](ClO4)2 (I) and [Cu(Oxen)Cu(4,4′-Bipy)2(H2O)2](ClO4)2 (II) (Oxen is N,N′-bis(2-aminoethyl)oxamide dianion, Bipy = 2,2′-bipyridine, 4,4′-Bipy = 4,4′-bipyridine), have been constructed and structurally characterized by X-ray crystallography. In these two complexes, each Cu2+ ion is located in a slightly distorted square-pyramidal environment. Complex I is extended to two-dimensional by face-to-face π-π-stacking with a distance of 3.648 II is raised to one-dimensional by face-to-face π-π-stacking and intermolecular H-bonding interaction with distances of 3.651 and 2.767 I is also investigated.

  • Content Type Journal Article
  • Pages 342-348
  • DOI 10.1134/S1070328412050089
  • Authors
    • S. Ren, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China
    • F. H. Li, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China
    • S. L. Ma, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

2D CdI2 topological layer architecture constructed by Zn(II) and flexible tricarboxylate ligand

Abstract  
A new coordination polymer, [(CH3)2NH2][Zn(Tci)] · 2.5H2O (I) (H3Tci = tris(2-carboxyethyl)isocyanurate), has been synthesized under solvothermal conditions. X-ray diffraction analysis reveals that I features a 2D anionic layer structure constructed by Zn(II) paddle-wheel building blocks and Tci linkers. The Zn(II) paddle-wheel can be viewed as a node, and the network of I can be simplicated as CdI2 net. Hydrogen bond interactions link the adjacent 2D layers to form a 3D supramolecular framework.

  • Content Type Journal Article
  • Pages 315-318
  • DOI 10.1134/S1070328412050090
  • Authors
    • S. Sun, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China
    • G. X. Zhang, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China
    • J. Q. Gao, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China
    • Z. B. Han, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

New nickel(II) carboxylate-phosphonate cluster: Synthesis and structure

Abstract  
Dodecanuclear mixed-ligand complex [(μ2-Hmhp)6Ni123-OH)46-O3PPh)42-Piv)12] · 7.5MeCN · 1.5THF (I · 7.5MeCN · 1.5THF) was synthesized by the reaction of nickel(II) trimethylacetate [Ni9(OH)6(Piv)12(HPiv)4] (Piv is the pivalate anion) and 6-methyl-2-hydroxypyridine (Hmhp) with phenylphosphonic acid potassium salt (K2O3PPh). The structure of complex I is determined by X-ray diffraction analysis. The geometry of the metal framework of the isolated complex is determined by the structure forming phosphonate anion.

  • Content Type Journal Article
  • Pages 331-336
  • DOI 10.1134/S1070328412050016
  • Authors
    • N. P. Burkovskaya, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • M. E. Nikiforova, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • M. A. Kiskin, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • V. I. Pekhn’o, Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. akademika Palladina 32/34, Kiev, Ukraine
    • A. A. Sidorov, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • V. M. Novotortsev, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • I. L. Eremenko, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 May 2012 | 7:37 am CEST

Carbonylate anion [(μ-H)Os3(CO)10L]− as a precursor in the synthesis of heterometallic Os3M clusters

Abstract  
A new method for the synthesis of heterometallic clusters Os3M is developed. The reactions of hydridocarbonyl cluster (μ-H)2Os3(CO)10 (I) with binuclear carbonyls Co2(CO)8 and Fe2(CO)9 in the presence of 1,4-diazabicyclo[2.2.2]octane (Dabco) afford anionic complexes [Os3Co(CO)13] (II) and [HOs3Fe(CO)13] (III) with the counterion N2C6H13+. Similar reactions with halide complexes [MCp*Cl2]2 (M = Rh and Ir) yield neutral complexes [Os3M(CO)10(μ-H)(μ-Cl)] (M = Rh(IV) and Ir(V)). The reactions occur rapidly at room temperature with high yields. The newly obtained clusters are characterized by the data of IR and 1H NMR spectroscopy, elemental analysis, and X-ray diffraction analysis.

  • Content Type Journal Article
  • Pages 273-278
  • DOI 10.1134/S1070328412020042
  • Authors
    • V. P. Kirin, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • M. Yu. Afonin, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • A. V. Virovets, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • V. A. Maksakov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Novel bimetallic Cr3Yb3 mixed salt containing a 3d-4f heterometallic Cr2Yb3 cluster

Abstract  
A novel bimetallic Cr3Yb3 coordination compound containing a 3d-4f heterometallic Cr2Yb3 cationic cluster has been synthesized and structurally characterized. The crystal structure was determined by X-ray analysis. Results denote that the complex consists of an original [Cr2IIIYb3III]3+ moiety with a trigonal-bipyramidal topology of the [Cr2Yb3(μ-OOCCH3)6(μ-OH)6(H2O)6]3+ core, an isolated [CrIII(CN)6]3− anion, and four molecular neutral 4,4′-bipyridene (Bipy) ligands, namely, [Cr2Yb3(μ-OOCCH3)6(μ-OH)6(H2O)6][Cr(CN)6] · 4Bipy · 13H2O.

  • Content Type Journal Article
  • Pages 253-256
  • DOI 10.1134/S1070328412040070
  • Authors
    • S. L. Ma, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China
    • S. Ren, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Dibromo and diiodo derivatives of [4.4]dibenzo-24-crown-8 as novel efficient sorbents of elements from mineral acid solutions

Abstract  
The sorption behavior of novel functionalized endoreceptors, halogen (Br, I) derivatives of [4.4]dibenzo-24-crown-8, with respect to sorption of 34 elements from 1–5 M HNO3 solurions and 29 elements from 1–5 M HCl solutions were studied. The receptors poorly extract elements from nitric acid solutions but are strong sorbents of some elements from concentrated hydrochloric acid solutions. The highest distribution ratios of elements (D, cm3/g) for sorption from 5 M HCl were observed for 4′,4″,5″[4.4]dibromodibenzo-24-crown-8: Au (D = 880) > Ga (469) > Sb (70) > Fe (55) > Sn (14.3) > Mo (10.3) > Re (2.9) > Cd (1.4) > Ge (0.61) > In (0.33) ≈ Zn (0.32) ≈ Ni (0.31) > Zr (0.29) ≈ Cr (0.28) > Sr, Tl (0.25) > Be (0.24) > Mn (0.22) ≈ La (0.21) ≈ Ba (0.20) > Ca, K, Mg, Si (< 0.1). A new way for increasing the sorption properties of dibenzocrown ethers by introducing bromine substituents into the polyether benzene rings was established. The sorption of elements from concentrated hydrochloric acid solutions follows an anion exchange mechanism by analogy with extraction of these elements.

  • Content Type Journal Article
  • Pages 295-299
  • DOI 10.1134/S1070328412040112
  • Authors
    • V. V. Yakshin, All-Russia Research Institute of Chemical Technology, Kashirskoe sh. 33, Moscow, 115230 Russia
    • O. M. Vilkova, All-Russia Research Institute of Chemical Technology, Kashirskoe sh. 33, Moscow, 115230 Russia
    • S. A. Kotlyar, Bogatskii Physicochemical Institute, National Academy of Sciences of Ukraine, Chernomorskaya doroga 86, Odessa, 270080 Ukraine
    • A. Yu. Tsivadze, Frumkin Institute of Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117071 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Synthesis and crystal structure of [Et4N] [Cr(PzTp)Cl3] [PzTp− = Tetra(pyrazolyl) Borate]

Abstract  
Treatment of CrCl3(THF)3 with KPzTp in THF affords of the compound K[Cr(PzTp)Cl3], and the K+ in this complex can be replaced by Et4N+ in CH2Cl2. Well-defined green crystals of [Et4N]r(PzTp)Cl3] (I) suitable for X-ray diffraction are obtained at −20°C. In the anion the metal center shows a distorted octahedral geometry with the tetra(pyrazolyl) borate bonded as three N-donor tripod ligands and three chloride atoms completing the coordination sphere.

  • Content Type Journal Article
  • Pages 249-252
  • DOI 10.1134/S1070328412040021
  • Authors
    • Y. Ding, School of Chemistry and Materials Science, Xiaogan University, Hubei Xiaogan, 432000 P.R.China
    • C. F. Xia, School of Chemistry and Materials Science, Xiaogan University, Hubei Xiaogan, 432000 P.R.China
    • Z. J. Ku, School of Chemistry and Materials Science, Xiaogan University, Hubei Xiaogan, 432000 P.R.China
    • L. Wang, School of Chemistry and Materials Science, Xiaogan University, Hubei Xiaogan, 432000 P.R.China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Heterometallic clusters with the MoNbI8 core: The synthesis and crystal structures of (Ph4P)2[Mo5NbI8Cl6] and (4-MePyH)5[Mo5NbI8Cl6]Cl2

Abstract  
Heterometallic chloride complexes [Mo5NbI8Cl6] n (n = 2, 3) are synthesized. The crystal structures of their salts are determined: for (Ph4P)2[Mo5NbI8Cl6] (I), triclinic crystal system, spacegroup P
-
1
 
, a = 10.9886(6), b = 11.4604(5), c = 13.4343(7) Å, α = 66.124(2), β = 86.892(2), γ = 86.490(2)°, Z = 1, V = 1543.35(13) Å3; and for (4-MePyH)5[Mo5NbI8Cl6]Cl2 (II), monoclinic crystal system, space group C2/m, a = 16.4937(4), b = 14.7335(3), c = 11.6534(3) Å, β = 99.8750(10)°, Z = 2, V = 2789.94(11) Å The geometric parameters of compounds I and II and the conditions for the formation of the complexes with the charges −2 and −3 are discussed.

  • Content Type Journal Article
  • Pages 257-263
  • DOI 10.1134/S1070328412030013
  • Authors
    • S. B. Artemkina, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akad. Lavrent’eva 3, Novosibirsk, 630090 Russia
    • M. S. Tarasenko, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akad. Lavrent’eva 3, Novosibirsk, 630090 Russia
    • A. V. Virovets, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akad. Lavrent’eva 3, Novosibirsk, 630090 Russia
    • N. G. Naumov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akad. Lavrent’eva 3, Novosibirsk, 630090 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

3D Supramolecular structure of the coordination polymer [Ag(2-MePyz)ReO4]

Abstract  
The complex [Ag(2-MePyz)ReO4] (I) is synthesized, and its structure is determined. The crystals are monoclinic, space group P 21/c, a = 7.234(1), b = 15.451(1), c = 8.036(3) Å, β = 92.56(1)°, V = 897.3(2) Å3, ρcalcd = 3.347 g/cm3, Z = 4. Structure I consists of cationic polymer chains [Ag(2-MePyz)]+. Anions ReO4 are weakly bound to Ag+ (Ag...Oaverage 2.693 Å) and join the latter into a supramolecular framework. The Ag+ ion has a linear coordination (NAgN 177.9(2)°, distances Ag-N 2.223(5) and 2.242(5) Å).

  • Content Type Journal Article
  • Pages 245-248
  • DOI 10.1134/S1070328412040057
  • Authors
    • Yu. V. Kokunov, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • Yu. E. Gorbunova, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • V. V. Kovalev, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

On the complexes of yttrium chloride with carbamide and acetamide

Abstract  
Data on the synthesis and the IR spectroscopic and X-ray diffraction analyses of new complexes of yttrium chloride with carbamide (Ur), [Y(Ur)4(H2O)4]Cl3 (I) and [Y(Ur)6(H2O)2]Cl3 (II), and with acetamide (AA), [Y(AA)5(H2O)2]Cl3 (III), are presented. The coordination of the ligands occurs through the oxygen atoms. For complexes I and II, the coordination polyhedra of the Y atoms are distorted tetragonal antiprisms. For structure III, the coordination polyhedron of the Y atom is a distorted pentagonal bipyramid. The coordination of four Ur molecules in complex I does not change their planar structure, and two Ur molecules in structure II have the dihedral angle N-C(O)-N different from 180°. The chloride ions are in the external sphere. Many hydrogen bonds are observed in the structures of complexes IIII.

  • Content Type Journal Article
  • Pages 240-244
  • DOI 10.1134/S107032841204001X
  • Authors
    • L. Yu. Alikberova, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, Russia
    • D. V. Al’bov, Moscow State University, Leninskie gory, Moscow, 119992 Russia
    • P. S. Kibal’nikov, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, Russia
    • M. G. Zaitseva, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, Russia
    • V. V. Kravchenko, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, Russia
    • G. A. Fedorova, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, Russia
    • N. S. Rukk, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Synthesis and crystal structure of the Tb(III) complex with 1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedione and 1,10-phenanthroline

Abstract  
The reaction of Tb(NO3)3 · 6H2O with 1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedi-one (HL) and 1,10-phenanthroline (Phen) in the presence of NaOH in a water-alcohol medium afforded the neutral complex [Tb(L)3(Phen)] (I). The unstable adduct [Tb(L)3(Phen)] · 0.4 MeCN (II), whose structure is studied by X-ray diffraction analysis, is obtained from an acetonitrile solution. The crystals of compound II at 100 K are triclinic, a = 11.2508(13), b = 11.4246(14), c = 22.486(3) Å, α = 96.522(2)°, β = 91.578(2)°, γ = 110.073(2)°, V = 2690.3(5) Å3, space group P
-
1
 
, Z= 2, R = 0.0433. The complex is characterized by the green luminescence (λexc = 380 nm, λem = 550 nm).

  • Content Type Journal Article
  • Pages 300-304
  • DOI 10.1134/S1070328412040100
  • Authors
    • I. V. Taidakov, Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow, Russia
    • B. E. Zaitsev, Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow, Russia
    • A. N. Lobanov, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia
    • A. G. Vitukhnovskii, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia
    • Z. A. Starikova, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Hydrothermal synthesis and crystal structure of a new 2D metal-organic framework: [Gd(Oba)(Ox)0.5(H2O)2]n (H2Oba = 4,4′-oxybis(benzoic acid); H2Ox = oxalic acid)

Abstract  
A new coordination polymer [Gd(Oba)(Ox)0.5(H2O)2] n (I) (H2Oba = 4,4′-oxybis(benzoic acid), H2Ox = oxalic acid) has been synthesized by hydrothermal reactions and characterized by elemental analysis and single-crystal X-ray diffraction. In I, two Gd3+ ions are bridged by Oba ligands to form 1D ribbon chains, which are further connected by Ox ligands, generating a 2D layer structure.

  • Content Type Journal Article
  • Pages 305-308
  • DOI 10.1134/S107032841202008X
  • Authors
    • S. Sun, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China
    • M. Y. Zhang, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China
    • G. X. Zhang, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China
    • Z. B. Han, College of Chemistry, Liaoning University, Shenyang, 110036 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

A 1D linear chain coordination polymer constructed by Cu(II) with H3Tci and Bipy ligands (H3Tci = tris(2-carboxyethyl)isocyanurate, Bipy = 4,4′-bipyridine)

Abstract  
A new coordination polymer [Cu(H2Tci)2(Bipy)(H2O)] · 2H2O (I) (H3Tci = tris(2-carboxyethyl)isocyanurate, Bipy = 4,4′-bipyridine) has been synthesized and characterized by elemental analysis, IR, and X-ray single-crystal diffraction. The X-ray diffraction analysis reveals that I (C34H42CuN8O21) crystallizes in the monoclinic crystal system, space group P21/c. In I, the metal centers are linked by Bipy ligands to generate an infinite linear chain and the H2Tci ligands adopt monodentate coordination mode to graft the linear chain. The adjacent chains are linked by hydrogen bonds to form a three-dimensional supramolecular framework.

  • Content Type Journal Article
  • Pages 279-283
  • DOI 10.1134/S1070328412040124
  • Authors
    • M. Y. Zhang, College of Chemistry, Liaoning University, Shenyang, 110036 PR. China
    • G. X. Zhang, College of Chemistry, Liaoning University, Shenyang, 110036 PR. China
    • J. Q. Gao, College of Chemistry, Liaoning University, Shenyang, 110036 PR. China
    • Z. B. Han, College of Chemistry, Liaoning University, Shenyang, 110036 PR. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Reactions of the biologically active palladium complexes (H2A)2[PdCl4] with glutamic acid as a model of their transformations in blood plasma

Abstract  
Complexation in the systems Pd(II)-Cl-HA-H2Glu (HA is the l- or d-conformer of 2-methylamino-1-phenylpropanol; H2Glu is glutamic acid) was studied using pH-metric titration, electronic absorption spectroscopy, and quantum-chemical modeling. It was found that the ratio of the complex species largely depends on pH and the amine, the crucial factor being stabilization of the structures by hydrogen bonding. This provides explanation to the previous data on the different radioprotective activities of the complexes (H2A)2[PdCl4] containing the l- and d-conformers of the ligand HA.

  • Content Type Journal Article
  • Pages 233-239
  • DOI 10.1134/S1070328412020029
  • Authors
    • I. A. Efimenko, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
    • N. A. Dobrynina, Moscow State University, Moscow, Russia
    • O. N. Shishilov, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
    • N. A. Ivanova, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
    • O. S. Erofeeva, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Triaryl- and trialkylantimony(V) Bis(catecholates) based on 1,1′-spirobis[3,3-dimethylindanequinone-5,6]: Spectroscopic and electrochemical studies

Abstract  
A series of new binuclear bis(catecholate) antimony(V) complexes based on 1,1′-spirobis[3,3-dimethylindanequinone-5,6] with various substituents at the central antimony atoms, R3Sb(Cat-Spiro-Cat)SbR3 (IIV) and R3Sb(CatBr-Spiro-BrCat)SbR3 (VVIII) (R = p-fluorophenyl, phenyl, p-tolyl, and ethyl), were synthesized. Spirobis(catecholates) IIII exhibit two one-electron oxidation waves on the cyclic voltammograms, whereas bromo-substituted spirobis(catecholates) VVII undergo two-electron oxidation immediately at the first stage. The two-electron oxidation of the complexes results in the loss of one of the organoantimony fragments and the formation of mononuclear catecholate-quinone complexes (Q-Spiro-Cat)SbR3 or (QBr-Spiro-BrCat)SbR3, respectively. An insignificant delocalization of the charge and spin between two redox centers is observed in the complexes. The nature of substituents at the antimony atom exerts an effect on the values of redox potentials of the complexes: more donating groups decrease the oxidation potentials of the catecholate fragments and more withdrawing groups increases these values.

  • Content Type Journal Article
  • Pages 284-294
  • DOI 10.1134/S1070328412040094
  • Authors
    • A. I. Poddel’sky, Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. Tropinina 49, Nizhnii Novgorod, 603600 Russia
    • I. V. Smolyaninov, Southern Research Center, Russian Academy of Sciences, proezd Chekhova 41, Rostov-on-Don, 344006 Russia
    • N. N. Vavilina, Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. Tropinina 49, Nizhnii Novgorod, 603600 Russia
    • Yu. A. Kurskii, Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. Tropinina 49, Nizhnii Novgorod, 603600 Russia
    • N. T. Berberova, Southern Research Center, Russian Academy of Sciences, proezd Chekhova 41, Rostov-on-Don, 344006 Russia
    • V. K. Cherkasov, Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. Tropinina 49, Nizhnii Novgorod, 603600 Russia
    • G. A. Abakumov, Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, ul. Tropinina 49, Nizhnii Novgorod, 603600 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

Complexes based on the anionic octahedral rhenium chalcogenide clusters and [M(En)2]2+ (M = Ni, Cu) cations

Abstract  
The compounds [Ni(H2O)2(En)2][{Ni(En)2}Re6S8(OH)6] · 7H2O (I), [{Cu(En)2}Re6S8(H2O)2(OH)4] · 4H2O (II), and [Ni(H2O)2(En)2]0.5[Re6Se8(H2O)3(OH)3] · 10H2O (III) were synthesized by layering aqueous solutions of Ni(En)2Cl2 or Cu(En)2Cl2 (En is ethylenediamine) onto aqueous solutions of the potassium salts of the corresponding octahedral chalcohydroxo rhenium cluster complexes [Re6Q8(OH)6]4− (Q = S, Se). The structure of the obtained compounds was determined by X-ray diffraction analysis.

  • Content Type Journal Article
  • Pages 264-272
  • DOI 10.1134/S1070328412030074
  • Authors
    • Y. V. Mironov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • S. S. Yarovoi, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • A. V. Ermolaev, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • K. A. Brylev, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 17 Apr 2012 | 8:04 am CEST

New rhenium(III) complexes with fluorinated β-diketones

Abstract  
Five new rhenium(III) complexes of the general formula ReCl2(RFCOCHCORF)(PPh3)(OPPh3), where RF = CF3 (I), C2F5 (II), C3F7 (III), C4F9 (IV), and CF3CFOC3F7 (V), were synthesized. The known rhenium(V) complex ReOCl2(OC2H5)(PPh3)2, which can readily be obtained from metallic rhenium, was used as a precursor. Two polymorphous modifications of compound I were found and studied by X-ray diffraction analysis. The thermal properties of the synthesized complexes were characterized by the DTA-TG method.

  • Content Type Journal Article
  • Pages 200-206
  • DOI 10.1134/S1070328412030037
  • Authors
    • D. V. Drobot, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, 117571 Russia
    • M. A. Kurykin, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991 Russia
    • A. I. Irtegov, Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, 117571 Russia
    • V. N. Khrustalev, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991 Russia
    • M. I. Buzin, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991 Russia
    • L. V. Gumileva, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Metal-metal bond cleavage in [Cp(CO)2Fe-Fe(CO)2Cp] under the action of organotellurium(IV)tribromides

Abstract  
The oxidation of [CpFe(CO)2]2 by RTeBr3 allowed the corresponding organotellurodibromide complexes CpFe(CO)2TeBr2R (R=Ph, cyclo-(C8H12)(OMe). Their structural features (as determined by single-crystal X-ray diffraction analysis) are discussed.

  • Content Type Journal Article
  • Pages 219-223
  • DOI 10.1134/S1070328412020091
  • Authors
    • Y. V. Torubaev, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
    • A. V. Pavlova, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
    • A. A. Pasynskii, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

First heteroleptic Mo3S7 clusters containing non-innocent phenanthroline ligands

Abstract  
Reaction of the thiobromide [Mo3S7Br6]2− cluster anion with 5,6-dimethyl-1,10-phenanthroline (Me2Phen) in solution leads to the substitution of two bromide ligands and the subsequent formation of a new mixed-ligand neutral complex [Mo3S7Br4(Me2Phen)] (I). Reaction of [Mo3S7Br6]2− with 5,6-dimethyl-1,10-phenanthroline in CH2Cl2 followed by treatment of I with Na(Dtc) · 3H2O (Dtc = diethyldithiocarbamate) results in the new mixed-ligand cluster complex [Mo3S7(Dtc)2(Me2Phen)]2+ (IIa). Slow evaporation of the CHCl3 solution of the complex in the presence of PF6 gives crystals of {[Mo3S7(Dtc)2(Me2Phen)]Br}PF6 · 3CHCl3 (II) characterized by X-ray structural analysis. Close contacts S...S result in the formation of cationic dimers {[Mo3S7(Dtc)2(Me2Phen)]2}4+ which form infinite chains through additional Sax...Br contacts. All compounds were characterized by IR, elemental analysis and ESI-MS. Synthesized complexes represent the first examples of heteroleptic Mo3S7 clusters containing phenanthroline ligands.

  • Content Type Journal Article
  • Pages 173-177
  • DOI 10.1134/S1070328412030050
  • Authors
    • A. Gushchin, Departament de Química Física i Analítica, Universitat Jaume I, Castelló de la Plana, 12071 España
    • R. Llusar, Departament de Química Física i Analítica, Universitat Jaume I, Castelló de la Plana, 12071 España
    • D. Recatalá, Departament de Química Física i Analítica, Universitat Jaume I, Castelló de la Plana, 12071 España
    • P. Abramov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Osmium thioselenochloride Os2S6Se2Cl8: Synthesis, cluster isolation, and structure

Abstract  
The quaternary thioselenochloride complex Os2S6Se2Cl8 (I) was obtained by a reaction of OsO4 with a solution of Se in S2Cl2 at 100°C and identified by combination of X-ray diffraction (polycrystalline approach) and cluster framework isolation. A reaction of complex I with melted 4-cyanopyridine (4-CNPy) at 165°C gave the complex Os2S2Cl4(4-CNPy)4, which confirms the integrity of the binuclear cluster frame-work [Cl2OsS2OsCl2] in complex I.

  • Content Type Journal Article
  • Pages 167-172
  • DOI 10.1134/S1070328412030104
  • Authors
    • S. V. Volkov, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
    • R. E. Gladyshevskii, Ivan Franko National University, ul. Kirila i Mefodiya 6, Lviv, Ukraine
    • Yu. V. Mironov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
    • P. Yu. Demchenko, Ivan Franko National University, ul. Kirila i Mefodiya 6, Lviv, Ukraine
    • O. G. Yanko, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
    • A. I. Smolentsev, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
    • Z. A. Fokina, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
    • L. B. Khar’kova, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
    • S. A. Baranets, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Cuboidal cluster aqua complexes with M3M′Q4 cores (M = Mo, W; M′ = Ni, Pd; Q = S, Se) and their derivatives

Abstract  
The results of the studies on the synthesis, structure, and reactivity of heterometal cuboidal clusters of Mo and W, {M3M′(μ−3Q)4}4+ (M = Mo, W; Q = S, Se; M′ = Ni, Pd), published in the last decade by the authors, have been summarized.

  • Content Type Journal Article
  • Pages 159-166
  • DOI 10.1134/S1070328412020030
  • Authors
    • R. Hernandez-Molina, Departamento de Química Inorgánica, Universidad de La Laguna, Islas Canarias, España
    • M. N. Sokolov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Low-temperature preparation of tungsten halide clusters: Crystal structure of the adduct W5Br12 · SbBr3

Abstract  
Single-crystals of a new compound W5Br12 · SbBr3 (I) were isolated as a reaction product from the reduction of WBr6 with elemental antimony at 250°C. The crystal structure was determined by single-crystal X-ray diffraction analysis. The structure contains square-pyramidal tungsten clusters being linked into infinite [(W5Br8i)Br3aBr22/a-a] chains through shared W-Bra-a-W contacts of adjacent clusters. The structure of the adduct I can be viewed as an intercalation compound composed of double-layers of cluster chains alternating with mono-layers of SbBr3 molecules.

  • Content Type Journal Article
  • Pages 178-182
  • DOI 10.1134/S1070328412020078
  • Authors
    • M. Ströbele, Abteilung für Festkörperchemie und Theoretische Anorganische Chemie, Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
    • H. -J. Meyer, Abteilung für Festkörperchemie und Theoretische Anorganische Chemie, Institut für Anorganische Chemie, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Binuclear complexes with the “Chinese Lantern” geometry as intermediates in the liquid-phase oxidation of dibenzyl ether with atmospheric oxygen in the presence of copper(II) carboxylates

Abstract  
Reactions of copper(II) carboxylates with dibenzyl ether (DBE) gave binuclear complexes of the formula Cu2(μ-OOCR)4(DBE)2 (R = Bu t , Ph, and CF3). The complexes were characterized by X-ray diffraction. The axial positions in the lantern-type dimer are occupied by the coordinated DBE molecules. The complexes seem to be analogs of intermediate catalysts for the oxidation of DBE with atmospheric oxygen in the presence of transition metal complexes. When stored in air, the complex Cu2(μ-OOCPh)4(DBE)2 underwent oxidation into Cu2(μ-OOCPh)4(HOOCPh)2, which was characterized by X-ray diffraction. The geometry of its framework is similar; the structure is stabilized by intramolecular H bonds between the axially oriented benzoic acid molecules and the adjacent bridging benzoate anions.

  • Content Type Journal Article
  • Pages 224-231
  • DOI 10.1134/S1070328412030086
  • Authors
    • S. E. Nefedov, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • E. V. Kushan, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • M. A. Yakovleva, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia
    • D. G. Chikhichin, Bogatskii Physicochemical Institute, National Academy of Sciences of Ukraine, Odessa, Ukraine
    • V. A. Kotseruba, Bogatskii Physicochemical Institute, National Academy of Sciences of Ukraine, Odessa, Ukraine
    • O. A. Levchenko, Bogatskii Physicochemical Institute, National Academy of Sciences of Ukraine, Odessa, Ukraine
    • G. L. Kamalov, Bogatskii Physicochemical Institute, National Academy of Sciences of Ukraine, Odessa, Ukraine

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

On the crystal structure of the germanium-based cationic clathrates [Ge38.3Sb7.7]I7.44, [Ge38.1P7.9]I8, and [Ge30.5Sn7.7P7.75]I7.88

Abstract  
Compounds [Ge38.3Sb7.7]I7.44, [Ge38.1P7.9]I8, and [Ge30.5Sn7.7P7.75]I7.88 with the clathrate type-I structure were synthesized. They crystallize in the cubic space group
Pm
-
3
 
n
with the unit cell parameter a = 10.8592(9), 10.4983(12), and 10.7210(10) Å (Z = 1), respectively. Their crystal structure represents the germanium(tin)-pnictogen framework, capturing the guest iodine anions in its cavities. All compounds have no vacancies in the host substructure; however, two of them show vacancies in the guest positions. The atomic distribution over the framework sites is of the most interest as it follows trends associated with the relative electronegativities of the atoms composing the framework. The results of the band structure calculations and application of the Zintl counting scheme are also discussed in relation to potential thermoelectric properties.

  • Content Type Journal Article
  • Pages 192-199
  • DOI 10.1134/S1070328412030062
  • Authors
    • M. A. Kirsanova, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991 Russia
    • L. N. Reshetova, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991 Russia
    • A. V. Olenev, “SineTheta” Ltd., Scientific Park of Lomonosov Moscow State University, Moscow, 119991 Russia
    • A. V. Shevelkov, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Synthesis and structures of new octahedral heterometal rhenium-osmium cluster complexes

Abstract  
New octahedral anionic heterometal rhenium-osmium cluster complexes [Re5OsSe8(OH)6]3− and [Re4Os2Se8(OH)6]2− were synthesized starting from [Re5OsSe8Cl6]3− and [Re4Os2Se8Cl6]2−, respectively. They were isolated as salts of the compositions Cs3[Re5OsSe8(OH)6] · 11H2O (I), K3[Re5OsSe8(OH)6] · 7H2O (II), and K2[Re4Os2Se8(OH)6] · 3H2O (III). The protonation of the terminal OH ligands of [Re5OsSe8(OH)6]3− in an aqueous solution resulted in crystallization of a neutral complex [Re5OsSe8(H2O)3(OH)3] · 12H2O (IV). The compounds have been characterized by single-crystal X-ray diffraction analysis. The luminescence properties of [Re5OsSe8(OH)6]3− and [Re4Os2Se8(OH)6]2− were studied. In addition, the electronic structures of the complexes were elucidated by DFT calculations.

  • Content Type Journal Article
  • Pages 183-191
  • DOI 10.1134/S1070328412030025
  • Authors
    • K. A. Brylev, Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
    • N. G. Naumov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
    • S. G. Kozlova, Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
    • M. R. Ryzhikov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
    • S. -J. Kim, Ewha Womans University, Seoul, 120-750 Republic of Korea
    • N. Kitamura, Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, 060-0810 Japan

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Low-melting salts with the [CrIII(NCS)4(1,10-phenanthroline)]− complex anion: Syntheses, properties, and structures

Abstract  
Four new low melting salts, “Ionic Liquids” consisting of the [CrIII(NCS)4(Phen)] complex monoanion and imidazolium based cations A, with A = 1-ethyl-3-methylimidazolium (EMIm), 1-butyl-3-methylimidazolium (BMIm), 1,3-dimethyl-2,4,5-triphenylimidazolium (DML), and 1,2,3,4,5-pentamethyl-imidazolium (PMIm), were investigated. Single-crystal X-ray investigations established the structures of the four compounds. (EMIm)[Cr(NCS)4(Phen)] (I): triclinic,
P
-
1
 
, a = 8.1382(6), b = 10.4760(8), c = 16.003(1) Å, α = 90.330(4)°, β = 94.759(4)°, γ = 107.305(4)°, Z = 2, R 1(F)/wR 2(F 2) = 0.0650/0.1770; (BMIm)[Cr(NCS)4(Phen)] (II): triclinic,
P
-
1
 
, a = 8.5545(4), b = 9.8620(4), c = 16.6762(6) Å, α = 92.503(2)°, β = 97.517(2)°, γ = 91.249(2)°, Z = 2, R 1(F)/wR 2(F 2) = 0.0393/0.0848; (DML)[Cr(NCS)4(Phen)] · C3H6O (III): triclinic,
P
-
1
 
, a = 11.0475(9), b = 13.589(1), c = 14.582(1) Å, α = 83.013(4)°, β = 87.116(4)°, γ = 70.333(5)°, Z = 2, R 1(F)/wR 2(F 2) = 0.0407/0.1023; (PMIm)[Cr(NCS)4(Phen)] · C3H6O (IV): orthorhombic, Pbca, a = 17.379(1), b = 16.514(1), c = 22.304(1) Å, Z = 8, R 1(F)/wR 2(F 2) = 0.0460/0.1107 (in addition III and IV contain co-crystallized acetone molecules). Each compound was characterized by elemental analysis, NMR, IR, und UV-Vis spectroscopy. Magnetic properties were derived from NMR investigations (EVANS method). All four compounds are paramagnetic with effective magnetic moments of spin-only CrIII. Melting points were obtained from DSC measurements. All melting points are higher than required for “Ionic Liquids”, but nevertheless “low” for molten salts.

  • Content Type Journal Article
  • Pages 207-218
  • DOI 10.1134/S1070328412030098
  • Authors
    • T. Peppel, Department of Chemistry, Inorganic Solid State Chemistry, University of Rostock, Rostock, D-18059 Germany
    • P. Thiele, Department of Chemistry, Inorganic Solid State Chemistry, University of Rostock, Rostock, D-18059 Germany
    • M. Köckerling, Department of Chemistry, Inorganic Solid State Chemistry, University of Rostock, Rostock, D-18059 Germany

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Synthesis and crystal structure of [Na2(μ-H2O)(H2O)CB[5]]Cl2 · 6H2O, [Na3(μ-H2O)4(H2O)4(CNPy@CB[6])]Cl3 · 8H2O, and [Rb2(μ-H2O)2(CNPy@CB[6])]Cl · 8H2O

Abstract  
The chain coordination polymers [Na2(μ-H2O)(H2O)CB[5]]Cl2 · 6H2O (I), [Na3(μ-H2O)4(H2O)4(CNPy@CB[6])]Cl3 · 8H2O (II), and [Rb2(μ-H2O)2(CNPy@CB[6])]Cl2 · 8H2O (III) were prepared by heating (110°C) of a mixture of sodium or rubidium chloride, cucurbit[n]uril (CB[n], where n = 5, 6), 4-cyanopyridine, and water. According to X-ray diffraction data, binding of polynuclear cations with CB[n] in IIII occurs through coordination of the oxygen atoms of the cucurbit[n]uril portals to alkali metal atoms. Complexes IIII of the above composition isolated to the solid phase as supramolecular compounds with CB[n] were structurally characterized for the first time.

  • Content Type Journal Article
  • Pages 153-158
  • DOI 10.1134/S1070328412020054
  • Authors
    • E. A. Kovalenko, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • D. Yu. Naumov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • V. P. Fedin, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. akademika Lavrent’eva 3, Novosibirsk, 630090 Russia
    • A. Müller, Fakultät für Chemie, Universität Bielefeld, Bielefeld, Germany

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 12 Mar 2012 | 6:21 pm CET

Oxidative dehydrogenation of N-(2-hydroxy-3,5-R1,R2-benzyl)-4-aminoantipyrines in the complexation reaction

Abstract  
Reactions of N-(2-hydroxy-3,5-R1,R2-benzyl)-4-aminoantipyrines with copper acetate in ethanol gave complexes with Schiff bases (SBs) rather than the expected complexes with reduced SBs; i.e., the starting ligands undergo oxidative dehydrogenation during the complexation reaction. The corresponding complexes with reduced SBs were obtained from sodium salts of the ligands and cupric sulfate in aqueous solutions. Kinetic measurements showed that oxidative dehydrogenation occurs in the heteroleptic complexes Cu(L i )(CH3COO)(X) (L i H are derivatives of N-(2-hydroxy-3,5-R1,R2-benzyl)-4-aminoantipyrines; i = 6–10; X = H2O, CH3OH, CH3CH2OH) but does not occur in the complexes CH3OH, CH3CH2OH. The absence of oxidative dehydrogenation of the ligands in Cu(L i )2 · H2O can be explained by the octahedral environment of the Cu2+ ion and, accordingly, the absence of the coordination site for molecular oxygen. The molecular structures of two Cu(II) complexes with SBs were determined by X-ray diffraction.

  • Content Type Journal Article
  • Pages 126-133
  • DOI 10.1134/S1070328412010071
  • Authors
    • A. A. Medzhidov, Nagiev Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
    • P. A. Fatullaeva, Nagiev Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
    • S. M. Peng, Taiwan National University, Taiwan, Taiwan
    • R. G. Ismaiylov, Nagiev Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
    • G. H. Lee, Taiwan National University, Taiwan, Taiwan
    • S. R. Garaeva, Nagiev Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

A novel hexaaza macrocyclic complex [CuL](ClO4)2

Abstract  
A novel N4-planar Cu(II) macrocyclic fragment, namely, [CuL](ClO4)2 (I) (L = 4-methyl-1,3,6,8,11,14-hexaazatricyclo[12.2.1.18,11)octadecane has been prepared from a simple template condensation reaction and structurally characterized for the first time. The complex of I crystallizes in the monoclinic system of space group P21/c with unit cell parameters: a = 17.124(10), b = 9.255(5), c = 14.053(8) Å and β = 111.262(7)°.

  • Content Type Journal Article
  • Pages 145-148
  • DOI 10.1134/S1070328412010101
  • Authors
    • S. Ren, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China
    • S. L. Ma, Department of Application Chemistry, College of Science, Tianjin University of Commerce, Tianjin, 300134 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis, crystal structures, and antibacterial activities of Schiff base zinc(II) complexes [Zn(L1)2] and [Zn(L2)2]

Abstract  
The reaction of cyclopentylamine with 2-hydroxy-1-naphthaldehyde and 5-nitrosalicylaldehyde, respectively, in methanol affords two new Schiff bases, 1-(cyclopentyliminomethyl)naphthalen-2-ol (HL1) and 4-nitro-2-(cyclopentyliminomethyl)phenol (HL2). Two new zinc(II) complexes, [Zn(L1)2] (I) and [Zn(L2)2] (II), derived from the Schiff bases, have been prepared and characterized by single-crystal X-ray diffraction, FT-IR, and elemental analysis. Complex I crystallizes in the monoclinic space group P21/c with a = 17.834(4), b = 14.738(3), c = 9.868(2) Å, β = 91.20(3)°, V = 2593.1(9) Å3, Z = 4. Complex II crystallizes in the triclinic space group P
-
1
 
with a = 10.206(1), b = 10.502(1), c = 12.554(1) Å, α = 66.771(2)°, β = 78.133(2)°, γ = 76.292(2)°, V = 1191.8(1) Å3, Z = 2. The Zn atom in each complex is coordinated by two N and two O atoms from two Schiff base ligands, forming a tetrahedral geometry. The Schiff bases and the complexes were assayed for antibacterial activities.

  • Content Type Journal Article
  • Pages 121-125
  • DOI 10.1134/S1070328412010034
  • Authors
    • Y. N. Guo, Department of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Heterovalent trinuclear Co(III)-Co(II)-Co(III) complexes with N-(2-Carboxyethyl)salicylaldimines

Abstract  
The heterovalent trinuclear cobalt complexes [Co2IIIL4 i · CoII(H2O)4] · nXmY (L i are deprotonated Schiff bases derived from substituted salicylaldehydes and β-alanine; i = 1–3) were obtained and characterized. An X-ray diffraction study of the trinuclear cobalt complex with N-(2-carboxyethyl)salicylaldimine showed that the central Co(II) ion and the terminal Co(III) ions are linked by bridging carboxylate groups. Either terminal Co(III) atom is coordinated to two ligand molecules. They form an octahedral environment consisting of two azomethine N atoms, two phenolate O atoms, and two O atoms of two carboxylate groups. The central Co(II) atom is coordinated to four water molecules and to two O atoms of two bridging carboxylate ligands involved in the coordination sphere of the terminal Co(III) atoms.

  • Content Type Journal Article
  • Pages 140-144
  • DOI 10.1134/S1070328412010022
  • Authors
    • S. R. Garaeva, Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
    • A. A. Medzhidov, Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
    • O. Beukgunger, Istanbul Technical University, Istanbul, Turkey
    • A. Aydin, Marmara University, Istanbul, Turkey
    • B. Yalcin, Marmara University, Istanbul, Turkey
    • M. G. Abbasov, Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, Baku, Azerbaijan

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis, crystal structures, and catalytic property of dioxomolybdenum(VI) complexes with hydrazones

Abstract  
Two new dioxomolybdenum(VI) complexes, [MoO2(L1)] n · 0.5 n CH3OH (I) and [MoO2(L2)(CH3OH)] (II), where L1 and L2 are the dianionic form of N′-[1-(4-diethylamino-2-hydroxyphenyl)methylidene]isonicotinohydrazide and N′-(2-hydroxy-4-methoxybenzylidene)-3-methylbenzohydrazide, respectively, were prepared and structurally characterized by physicochemical and spectroscopic methods and single-crystal X-ray determination. For complex I, a polymeric structure is obtained, which is linked by coordination of the pyridine N atoms to the Mo atoms of other [MoO2(L1)] units. Complex II is a mononuclear molybdenum compound. In both complexes, the Mo atoms are in octahedral coordination. The catalytic properties of the complexes indicate that they are efficient catalysts for sulfoxidation.

  • Content Type Journal Article
  • Pages 92-98
  • DOI 10.1134/S107032841202011X
  • Authors
    • W. X. Xu, College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, 448000 P.R. China
    • W. H. Li, College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, 448000 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis and crystal structures of the nickel(II) complex with nitronyl nitroxide

Abstract  
Two nickel(II) complexes [Ni(NIT-l′-MeBzlrn)2(Dca)2] (I, II) (NIT-l′-MeBzIm = 2-{2′-[(l′methyl)benzimidazolyl]}-4,4,5,5-tetramethylimidazoline-l-oxyl-3-oxide) have been prepared and structurally characterized by single-crystal X-ray diffraction. They are structural epimers. The complexe crystallizes in monoclinic, space group P21/n, Z = 4. Crystal data: C34H38N14NiO4, M r = 765.49, a = 15.019(3), b = 18.803(4), c = 15.756(3) Å, β = 109.399(3)°, γ = 90° (I); a = 13.934(3), b = 11.046(2), c = 24.570(5) Å, β = 90.024(2)° (II). The X-ray analysis reveals that Ni2+ ion resides in a distorted octahedral center. The complex was linked by intermolecular hydrogen bonds, resulting in a ID chain structure for I and a 2D network configuration for II.

  • Content Type Journal Article
  • Pages 115-120
  • DOI 10.1134/S1070328412020066
  • Authors
    • G. Liu, Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, 400067 P.R. China
    • B. Chen, Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, 400067 P.R. China
    • J. T. Cheng, Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, 400067 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

π-Complexes of copper(I) halides with 3-(allylamino)-(C3H5NHC2H4CN, Apn) and 3-(diallylamino)-((C3H5)2NC2H4CN, Dapn)-propanenitrile. syntheses and crystal structures of compounds [CuCl(Apn)], [(H+Apn)Cu2Cl3], [(H+Dapn)CuCl2], and [(H+Dapn)CuBr2]

Abstract  
The π-complexes [CuCl(C3H5NHC2H4CN)] (I), [(C3H5NH2C2H4CN)Cu2Cl3] (II), [((C3H5)2NHC2H4CN)CuCl2] (III), and [((C3H5)2NHC2H4CN)CuBr2] (IV) are obtained as single crystals by the ac electrochemical synthesis on copper wire electrodes from ethanolic solutions of 3-(allylamino)propanenitrile, 3-(diallylamino)propanenitrile, and CuX2 (X = Cl, Br). Their crystal structures are determined. The crystals of compounds I, III, and IV are monoclinic, space group P21/c, Z = 4. The crystals of compound II are triclinic, space group P
-
1
 
, Z = 2. The unit cell parameters are a = 11.125(4), b = 8.769(4), c = 8.570(4) Å, β = 90.94(4)°, V = 835.9(6) Å3 (I); a = 6.2566(4), b = 7.5975(6), c = 11.1251(8) Å, α = 90.896(6)°, β = 92.827(5)°, γ = 94.340(5)°, V = 526.57(7) Å3 (II); a = 11.656(4), b = 6.992(4), c = 14.681(5) Å, β = 100.89(4)°, V = 1174.9(9) Å3 (III); a =11.845(4), b = 7.282(4), c=14.855(5) Å, β = 100.37(4)°, V = 1260.4(9) Å3 (IV). The coordination mode of the Cu(I) atom in complex I includes two halogen atoms, the C=C bond, and the secondary amine N atom. The coordination environment in isostructural crystals of complexes III and IV is formed by the C=C bond and three halogen atoms as in complex II.

  • Content Type Journal Article
  • Pages 86-91
  • DOI 10.1134/S107032841201006X
  • Authors
    • M. Yu. Luk’yanov, Ivan Franko National University, ul. Kirilla i Mefodiya 6, Lviv, 79005 Ukraine
    • A. V. Pavlyuk, Ivan Franko National University, ul. Kirilla i Mefodiya 6, Lviv, 79005 Ukraine
    • M. G. Mys’kiv, Ivan Franko National University, ul. Kirilla i Mefodiya 6, Lviv, 79005 Ukraine

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis and crystal structure of a 1D coordination polymer Cu3(Mip)4(2,2′-Bipy)2 (H2Mip = 5-methylisophthalic acid, 2,2′-Bipy = 2,2′-bipyridine)

Abstract  
A new metal-organic coordination polymer Cu3(Mip)4(2,2′-Bipy)2 (I), where H2Mip = 5-methylisophthalic acid, 2,2′-Bipy = 2,2′-bipyridine has been hydrothermally synthesized and characterized by IR, elemental analysis, single-crystal X-ray diffraction analysis, and powder X-ray diffraction. The X-ray diffraction analysis reveals that I crystallizes in the triclinic crystal system, space group P
-
1
 
and exhibits a one-dimensional chain structure, which contains a trinuclear [Cu3(Mip)2(HMip)2(2,2′-Bipy)2] subunit, and the adjacent subunits are bridged by Mip anions into a 1D chain. Unit cell parameters for I: a = 10.239(2), b = 11.249(2), c = 11.971(2) Å, α = 82.01(1)°, β = 65.03(2)°, γ = 84.32(2)°, V = 1236.5(4) Å3, Z = 2.

  • Content Type Journal Article
  • Pages 149-152
  • DOI 10.1134/S1070328411120116
  • Authors
    • H. Y. Zhu, School of Chemistry & Resources Environment, Linyi University, Linyi, 276000 P.R. China
    • J. W. Ji, School of Chemistry & Resources Environment, Linyi University, Linyi, 276000 P.R. China
    • Y. W. Li, School of Chemistry & Resources Environment, Linyi University, Linyi, 276000 P.R. China
    • C. W. Li, School of Chemistry & Resources Environment, Linyi University, Linyi, 276000 P.R. China
    • K. Z. Zhu, School of Chemistry & Resources Environment, Linyi University, Linyi, 276000 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis and crystal structure of the equimolar complex of copper(I) cyanide with 3,3′-[ethane-1,2-diylbis(oxy)]dipropanenitrile

Abstract  
Complex [Cu(CN)(NC(CH2)2O(CH2)2O(CH2)2CN))] is obtained by the heating of copper(I) cyanide with 3,3′-[ethane-1,2-diylbis(oxy)]dipropanenitrile (DPN) followed by slow cooling. The X-ray diffraction analysis shows that the crystals are monoclinic, space group C2/c, a = 12.183(2), b = 10.667(2), c = 8.4700(13) Å, β = 92.444(10)°, V = 1099.7(3) Å3, Z = 4. The structure is built of infinite zigzag fragments [Cu(CN)(DPN)] n . The tetrahedral environment of the copper atom includes two cyano groups of the ligand and two cyano groups of the inorganic fragment.

  • Content Type Journal Article
  • Pages 111-114
  • DOI 10.1134/S1070328412020108
  • Authors
    • A. A. Vakulka, Jozef Stefan Institute, Ljubljana, Slovenia
    • E. A. Goreshnik, Jozef Stefan Institute, Ljubljana, Slovenia
    • M. G. Mys’kiv, Franko National University, ul. Kirila i Mefodiya 6, Lviv, 290005 Ukraine

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Complexes of Co(II), Ni(II), and Cu(II) chlorides and bromides with tetrazol-1-yl-tris(hydroxymethyl)methane: Synthesis and structure

Abstract  
The reactions of Co(II), Ni(II), and Cu(II) chlorides and bromides and their metallic powders with tetrazol-1-yl-tris(hydroxymethyl)methane (L) afforded new complexes ML2Hal2 · mH2O(M = Co(II) or Ni(II), Hal = Cl; M = Cu(II), Hal = Cl or Br, m = 0; and M = Co(II) or Ni(II), Hal = Br, m = 2), MLnCl2 (M = Co(II) or Ni(II), n = 2 or 4; M = Cu(II), n = 2), and MLnBr2 · mH2O (M = Ni(II), n = 2, m = 2; M = Cu(II), n = 2, m = 0). The compositions and structures of the synthesized complexes were determined by elemental analysis, IR spectroscopy (50–4000 cm−1), and X-ray diffraction analysis. The introduction of a bulky substituent into position 1 of the tetrazole cycle was shown to exert almost no effect on the coordination mode but affected the composition and structure of the complexes.

  • Content Type Journal Article
  • Pages 77-85
  • DOI 10.1134/S1070328412010010
  • Authors
    • M. M. Degtyarik, Research Institute of Physicochemical Problems, Belarussian State University, ul. Leningradskaya 14, Minsk, 220080 Belarus
    • A. S. Lyakhov, Research Institute of Physicochemical Problems, Belarussian State University, ul. Leningradskaya 14, Minsk, 220080 Belarus
    • O. A. Ivashkevich, Belarussian State University, ul. Leningradskaya 14, Minsk, 220080 Belarus
    • Yu. V. Grigoriev, Research Institute of Physicochemical Problems, Belarussian State University, ul. Leningradskaya 14, Minsk, 220080 Belarus

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis, crystal structure, and magnetic properties of a 3d-3d mixed heterometallic coordination polymer

Abstract  
A 3d-3d heterometallic coordination polymer, M(Bpp)(BDC) (I) (M = Co and Zn, Bpp = 1,3-bis(4-pyridyl)propane and H2BDC = 1,4-benzenedicarboxylic acid), has been prepared by hydrothermal synthesis and structurally characterized by IR, elemental analysis, and single-crystal X-ray diffraction. The Co(II) and Zn(II) ions in I are located indisorder with a molar ratio of 0.35: 0.65. Complex I crystallizes in the orthorhombic space group Pbca and displays a two-dimensional 2-fold interpenetrated structure with (4,4) topology. The coexistence of two metal ions in the structure makes them more thermally stable than thepreviously reported homometallic polymers of Co(II) or Zn(II) ions. Complex I exhibits weaker antiferromagnetism than the pure Co(II) complex owing to the incorporation of Zn(II).

  • Content Type Journal Article
  • Pages 134-139
  • DOI 10.1134/S1070328412010046
  • Authors
    • X. J. Kong, Anhui Key Laboratory of Functional Coordination Compounds, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, 246003 P.R. China
    • C. Guo, Anhui Key Laboratory of Functional Coordination Compounds, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, 246003 P.R. China
    • G. X. Liu, Anhui Key Laboratory of Functional Coordination Compounds, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, 246003 P.R. China
    • Y. Wang, Anhui Key Laboratory of Functional Coordination Compounds, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, 246003 P.R. China
    • S. Nishihara, Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka, 599-8531 Japan

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Synthesis, structure, and characterization of a 1D monocopper substituted Dawson-type arsenotungstate (H2En)0.5[Cu(En)2]0.5[Cu(En)2(H2O)]2[Cu(En)2] (α1-As2W17CuO61) · 8H2O

Abstract  
A new 1D organic-inorganic hybrid monocopper substituted Dawson-type arsenotungstate (H2En)0.5[Cu(En)2]0.5{[Cu(En)2(H2O)]2[Cu(En)2](α1-As2W17CuO61)} · 8H2O (I) has been hydrothermally synthesized by the reaction of Na8[A-α-HAsW9O34] · 11H2O, CuCl2 · 2H2O, YCl3, with enthylenediamine (En) and characterized by elemental analyses, IR spectra, UV spectra, powder X-ray diffraction, thermogravimetric analysis, as well as single-crystal X-ray diffraction. Single-crystal structural analysis shows that I displays an interesting 1D chain constructed from [α1-As2W17CuO61]8− subunits by means of common oxygen atoms and [Cu(En)2]2+ bridges. It should be noted that the structural transformation of the trivacant Keggin polyoxoanion [A-α-AsW9O34]9− to the monovacant Dawson [α-As2W17O61]10− polyoxoanion was observed. The TG curve of I exhibits three stages of weight loss.

  • Content Type Journal Article
  • Pages 99-105
  • DOI 10.1134/S1070328412010083
  • Authors
    • X. R. Pei, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 P.R. China
    • Y. Y. Li, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 P.R. China
    • D. Y. Shi, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 P.R. China
    • J. Luo, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 P.R. China
    • L. J. Chen, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 P.R. China
    • J. W. Zhao, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, 475004 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Crystal structure and luminescence and thermochromic properties of bis-1,10-phenanthrolinium hexachlorotellurate(IV)

Abstract  
The structure of bisphenanthrolinium hexachlorotellurate(IV) (C12H9N2)2TeCl6 is determined by X-ray diffraction analysis: a = 7.6619(8), b = 8.0034(8), c = 10.959(1) Å, α = 82.680(2)°, β = 81.379(2)°, γ = 85.569(2)°; space group P
-
1
 
, Z = 1, and ρcalcd = 1.774 g/cm3. The crystal structure is built of the [TeCl6]2− anions and phenanthrolinium cations. The electronic and geometric aspects determining the spectral luminescence and thermochromic properties are discussed.

  • Content Type Journal Article
  • Pages 106-110
  • DOI 10.1134/S1070328412020017
  • Authors
    • B. V. Bukvetskii, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia
    • T. V. Sedakova, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia
    • A. G. Mirochnik, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 14 Feb 2012 | 7:49 am CET

Electronic structures and photoelectron spectra of zinc(II) bis-β-diketonates

Abstract  
The influence of thio, dithio, and β-substitutions on the electronic structure and photoelectron spectra of zinc(II) acetylacetonate was studied by the DFT (density functional theory) quantum-chemical method and photoelectron (PE) spectroscopy. The geometry of the metallocycles, the energies, the composition of the molecular orbitals, and the effective charges on atoms were determined. The nature of the corresponding PE spectral bands of the Zn bis-β-diketonates was studied. The bands of four complexes were interpreted. The simulation of the PE spectra with allowance for the Koopmans defect was proposed.

  • Content Type Journal Article
  • Pages 36-43
  • DOI 10.1134/S1070328411120086
  • Authors
    • V. I. Vovna, Far East Federal University, ul. Sukhanova 8, Vladivostok, 690600 Russia
    • V. V. Korochentsev, Far East Federal University, ul. Sukhanova 8, Vladivostok, 690600 Russia
    • A. A. Dotsenko, Far East Federal University, ul. Sukhanova 8, Vladivostok, 690600 Russia

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 4 Jan 2012 | 7:53 am CET

Synthesis and X-ray structural characterization of dioxomolybdenum(VI) complexes with N′-(5-chloro-2-hydroxybenzylidene)-4-methylbenzohydrazide and N′-(2-hydroxybenzylidene)-4-methylbenzohydrazide

Abstract  
Two new dioxomolybdenum(VI) complexes, [MoO2(ClHm)(CH3OH)] (I) and [MoO2(Hm)(CH3OH)] (II) with the hydrazone ligands H2ClHm and H2Hm derived from 4-methylbenzohy-drazide with 5-chlorosalicylaldehyde and salicylaldehyde, respectively, have been synthesized and structurally characterized by physicochemical methods and single-crystal X-ray determination. The crystal of I crystallizes in the triclinic space group
P
-
1
 
, with a = 7.839(2), b = 9.656(3), c = 11.548(4) Å α = 88.885(3)°, β = 87.454(3)°, γ = 88.996(3)°, V = 873.0(5) Å3, Z = 2, R 1 = 0.0292, wR 2 = 0.0685, S = 1.092. The crystal of II crystallizes in the triclinic space group
P
-
1
 
, with a = 7.780(2), b = 10.584(3), c = 10.628(3) Å, α = 91.462(3)°, β = 104.818(3)°, γ = 103.288(3)°, V = 820.1(4) Å3, Z = 2, R 1 = 0.0403, wR 2 = 0.0784, S = 1.065. An X-ray analysis indicates that the structures of both complexes are similar to each other. The molybdenum atom in each complex is in an octahedral coordination environment constructed by two oxo groups, an NO2 donor set of the hydrazone ligand, and one methanol O atom.

  • Content Type Journal Article
  • Pages 65-70
  • DOI 10.1134/S1070328411120037
  • Authors
    • Y. Lei, School of Chemistry and Environmental Engineering, Chongqing Three Gorges University, Chongqing, 404000 P.R. China
    • C. Fu, School of Chemistry and Environmental Engineering, Chongqing Three Gorges University, Chongqing, 404000 P.R. China

Quelle: Russian Journal of Coordination Chemistry (Browse Results) | 4 Jan 2012 | 7:53 am CET

Full title page

Quelle: Latest Issue of Coordination Chemistry Reviews |

Developments in the metal chemistry of N-confused porphyrin

Quelle: Latest Issue of Coordination Chemistry Reviews |

Lanthanides and actinides: annual survey of their organometallic chemistry covering the year 1998

Quelle: Latest Issue of Coordination Chemistry Reviews |

Transition metals in organic synthesis: highlights for the year 2001

Quelle: Latest Issue of Coordination Chemistry Reviews |

Chromatographic and related electrophoretic methods in the separation of transition metal complexes or their ligands

Quelle: Latest Issue of Coordination Chemistry Reviews |

From Coello to Inorganic Chemistry: A Lifetime of Reactions - By Fred Basolo, Profiles in Inorganic Chemistry, John P. Fackler Jr. (Series Ed.), Kluwer Academic Publishers/Plenum Press, New York, NY, Hardbound, Price: Euro 69.50/US$ 59.95/GBP 42.50, ISBN 0-306-46774-7

Quelle: Latest Issue of Coordination Chemistry Reviews |

Author index

Quelle: Latest Issue of Coordination Chemistry Reviews |

Subject index

Quelle: Latest Issue of Coordination Chemistry Reviews |




 


Sonstige Hinweise:


Ueber diese Seite:

 

Urheber und Verantwortlich fuer die Inhalte der verlinkten Artikel sind die in den Quellen genannten Anbieter.

 

Hinweise zur Veroeffentlichung Ihrer Pressemitteilung im Bereich Chemie und angrenzende Fachgebiete

Update:

08.10.2009

Thema:

Chronologische Liste mit Fachartikeln zum Thema Komplexchemie.

Benutzerdefinierte Suche

Internetchemie Copyright: 2007 - 2009 A. J.