Syntheses and characterization of two monomeric zinc complexes containing aqua ligands

被引：60

作者：

Ye, BH ^{[1
]}

Xue, F

Xue, GQ

Ji, LN

Mak, TCW

机构：

[1] Zhongshan Univ, Dept Chem, Guangzhou 510275, Peoples R China

[2] Chinese Univ Hong Kong, Dept Chem, Shatin, New Territories, Peoples R China

来源：

POLYHEDRON | 1999年 / 18卷 / 12期

关键词：

zinc complex; aqua; 2,2 '-biimidazole; 2,2 '-bipyridine; carboxylate;

D O I：

10.1016/S0277-5387(99)00058-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two monomeric zinc complexes, [Zn(H(2)brim)(2)(H2O)(2)](OAc)(2) . OHCH2CH2OH (H(2)biim = 2,2'-biimidazole) (1) and [Zn(bipy)(2)(H2O)(CF3CO2)](ClO4) (bipy = 2,2'-bipyridine) (2), have been synthesized and characterized by NMR and single-crystal structural analysis. The zinc ions in both complexes are coordinated in a distorted N4O2 octahedral geometry: the zinc ion in complex 1 is surrounded by two aqua [Zn-O 2.150 (3) Angstrom] and two H-2 biim ligands (Zn-N 2.150 Angstrom), the acetate groups act as counter-anions and form hydrogen bonds with H(2)biim; the zinc ion in 2 is ligated by two bipy ligands (Zn-N 2.144 Angstrom), one aqua molecule [Zn-O 2.148(2) Angstrom] and one monodentate carboxylate [Zn-O 2.154(2) Angstrom]. In both complexes, the aqua li;:and forms strong donor hydrogen bonds with the hydroxyl or carboxylate groups, being analogous to those found for the active sites of several zinc enzymes. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1785 / 1790

页数：6

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