Coordination compounds derived from first-row transition metal salts.: Synthesis, analytical, spectroscopic and structural characterization.: Crystal structure of [{bis(3,4,5-trimethylpyrazol-1-yl)methane}ZnBr2]

被引：16
|
作者：
Pettinari, C
Marchetti, F
Cingolani, A
Leonesi, D
Colapietro, M
Margadonna, S
机构：
[1] Univ Camerino, Dipartimento Sci Chim, I-62032 Camerino, Italy
[2] Univ Rome La Sapienza, Dipartimento Chim, I-00185 Rome, Italy
来源：
POLYHEDRON | 1998年 / 17卷 / 23-24期
关键词：
D O I：
10.1016/S0277-5387(98)00222-8
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The interaction between bis(4-methylpyrazol-1-yl)methane or bis(3,4,5-trimethylpyrazol-1-yl)methane and several MX2 salts (M = Mn, Fe, Co, Ni or Cu; X = Cl; M = Mn, Co, Ni or Cu, X = NO3; M = Zn, X = Br) gives 1:1 and 2:1 adducts depending on counter-ion, molar ratio of reagents and solvent of reaction employed. Structural conclusions are drawn from IR, far-IR, UV, magnetic susceptibility and conductivity data. In the crystal structure of the title compound the zinc atom is found in a strongly distorted tetrahedral coordination [N-Zn-N: 92.2(6); Br-Zn-Br: 119.1(1)degrees]. The Zn-N [2.075(19) and 2.078(15) Angstrom] and Zn-Br [2.350(3) and 2.372(3) Angstrom] bond distances are longer than those reported for related compounds owing to steric hindrance of the N-2-donor. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：4145 / 4154
页数：10
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