Synthesis and spectroscopic characterisation of cobalt(III) complexes with S-benzyl-β-N-(5-methylpyrazole-3-yl)methylenedithiocarbazate (H2L):: X-ray structures of [Co(HL)2]NO3•EtOH (1) and [Co(HL)(L)]•H2O (2)

被引：26
|
作者：
Bera, P
Butcher, RJ
Chaudhuri, S
Saha, N
机构：
[1] Univ Calcutta, Dept Chem, Kolkata 700009, W Bengal, India
[2] Howard Univ, Dept Chem, Washington, DC 20059 USA
[3] Bose Inst, RSIC, Kolkata 700009, W Bengal, India
来源：
POLYHEDRON | 2002年 / 21卷 / 01期
关键词：
Co(III) complexes; pyrazole; dithiocarbazate; synthesis; spectroscopy; X-ray crystal structures;
D O I：
10.1016/S0277-5387(01)00933-0
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two new cobalt(III) complexes with S-benzyl-beta-N-(5-methylpyrazole-3-yl)methylenedithiocarbazate (H2L), [Co(HL)(2)]NO3. EtOH (1) and [Co(HL)(L)].H2O (2), have been synthesised and characterised using single-crystal X-ray diffraction and spectroscopic (electronic, IR and NMR) techniques. The structure of 1 consists of [Co(HL)(2)](+) cation and NO3- anion linked by an ethanol solvent molecule, that of 2 consists of neutral monomeric species [Co(HL)(L)] with one mole water of crystallisation where the two ligand molecules are uniquely non-equivalent. In both the complexes the coordination geometry about cobalt is distorted octahedral and the two ligands are in the mer configuration (S and tertiary N atom cis to each other and the iminic N atoms trans). (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码：1 / 6
页数：6
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