Cobalt(III) Dimethylglyoximates Containing Selenourea and an Unusual Diselenourea Ligand: Synthesis and Structures

被引：8
|
作者：
Rija, A. P. [1 ]
Nicolescu, A. [2 ]
Soran, A. [3 ]
Coropceanu, E. B. [1 ]
Bulhac, I. I. [1 ]
Bologa, O. A. [1 ]
Deleanu, C. [2 ]
Bourosh, P. N. [4 ]
机构：
[1] Moldavian Acad Sci, Inst Chem, Kishinev, Moldova
[2] Petru Poni Inst Macromol Chem, R-6600 Iasi, Romania
[3] Univ Babes Bolyai, R-3400 Cluj Napoca, Romania
[4] Moldavian Acad Sci, Inst Appl Phys, Kishinev, Moldova
来源：
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY | 2011年 / 37卷 / 10期
关键词：
RED ELEMENTAL SELENIUM; CRYSTAL-STRUCTURES; COMPLEXES; SPECTRA; COBALOXIMES; DICHLORIDE; DIHYDRATE; CHEMISTRY; ENZYMES; MODELS;
D O I：
10.1134/S1070328411090077
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The complexes [Co(DH)(2)(Seu)(y)(Se-Seu)(z)](2)X center dot mSolv (DH is the dimethylglyoxime monoanion, Seu is selenourea, and X is [TiF6](2-), [ZrF6](2-)) were obtained from the system CoX center dot 6H(2)O-DH2-Seu in DMF-MeOH or MeOH-H2O and examined by UV, IR, and NMR spectroscopy and X-ray diffraction. Unexpectedly, the ligand Se-Seu (the oxidized form of selenourea) was detected on the axial coordinate, partially replacing selenourea. The complexes were formulated as [Co(DH)(2)(Seu)(1.75)(Se-Seu)(0.25)](2)[TiF6] center dot H2O (I) and [Co(DH)(2)(Seu)(Se-Seu)](2)[ZrF6] center dot 3H(2)O (II). The complex cations in I and II have trans-octahedral structures. Their crystal structures are made up of the complex Co3+ cations and the outer-sphere MF62- anions (M = Ti(IV) (I) and Zr(IV) (II)) held together by electrostatic interactions and hydrogen bonds; water of crystallization is also involved in hydrogen bonding.
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页码：757 / 765
页数：9
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