Synthesis and crystal structures of two monomeric zinc(II) complexes containing carboxylate and aqua ligands

被引：8
|
作者：
Chen, XM [1 ]
Huang, XC [1 ]
Tong, ML [1 ]
Tong, YX [1 ]
Ng, SW [1 ]
机构：
[1] UNIV MALAYA,INST ADV STUDIES,KUALA LUMPUR 50603,MALAYSIA
来源：
AUSTRALIAN JOURNAL OF CHEMISTRY | 1997年 / 50卷 / 08期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1071/C97019
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two monomeric zinc(II) complexes of betaine (Me3N+CH2CO2- = bet), [Zn(bet)(2)(H2O)Cl] (ClO4) (1) and [Zn(bet)(3)(H2O)] (ClO4)2 (2), have been prepared and characterized by single-crystal structural analysis. The zinc atom in both complexes is coordinated in a distorted tetrahedral geometry: the zinc atom in complex (1) is surrounded by one aqua ligand (Zn-O 1.979(3) Angstrom), one chloro ligand (Zn-Cl 2.218(1) Angstrom) and two monodentate carboxylate groups (Zn-O 1.946(2) Angstrom); the zinc atom in complex (2) is ligated by one aqua ligand (Zn-O 1.997(6) Angstrom) and three monodentate carboxylate groups (Zn-O 1.943(5)-2.106(8) Angstrom). In both complexes, the aqua ligand forms strong donor hydrogen bonds with adjacent carboxylate oxygens (for complex (1), O ... O is 2.689(2) Angstrom; for complex (2), O ... O are 2.67(1) and 2.709(8) Angstrom); these interactions are discussed in the context of zinc complexes and enzyme active sites.
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收藏
页码：865 / 868
页数：4
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