Monomer, dimer, tetramer and salt:: Structural variations in Zn(II) complexes of 4,4′-bipyridine-N,N′-dioxide

被引：7
|
作者：
Bourne, Susan A. [1 ]
Moitsheki, Lesego J. [1 ]
机构：
[1] Univ Cape Town, Dept Chem, ZA-7701 Rondebosch, South Africa
来源：
POLYHEDRON | 2007年 / 26卷 / 12期
基金：
新加坡国家研究基金会;
关键词：
crystal structures; 4,4 '-bipyridine-N,N '-dioxide; zinc(II) ions;
D O I：
10.1016/j.poly.2007.01.007
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Complexes of Zn1(1) salts with 4,4'-bipyridine-NN'-dioxide (bpdo) have been prepared by solvathermal and solvent layering methods. Three complexes were obtained from ZnBr2: 1 is a 2D coordination polymer [Zn2Br4(bpdo)2](n), (2) a discrete trimetallic molecule [Zn3Br6(H2O)(2)(bpdo)(4)] and 3 a salt [ZnBr4][Zn(H2O)(5)(bpdo)]. Complexes 2 and 3 contain Zn-11 ions in both octahedral and tetrahedral coordination geometry. While in 2, these are covalently linked by bridging bpdo ligands forming zwitterionic trimetallic molecules, in 3 there is complete charge separation into [ZnBr4](2-) anions and [Zn(H2O)5(bpdo)](2+) cations. When Zn(NCS)(2) is used as starting material, a ID coordination polymer [Zn(H2O)(2) (bpdo)(NCS)(2)](n) is obtained. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2719 / 2727
页数：9
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