Zhong Kai-Long
Department of Applied Chemistry, Nanjing College of Chemical Technology, Nanjing 210048, People's Republic of China.
Acta Crystallogr C Struct Chem. 2014 Feb;70(Pt 2):189-93. doi: 10.1107/S2053229613034347. Epub 2014 Jan 17.
In the Zn(II) compound poly[[bis(μ3-cyclohexane-1,3,5-tricarboxylato)bis[μ3-1,3,5-tris(imidazol-1-ylmethyl)benzene]trizinc(II)] hexahydrate], {[Zn3(C18H18N6)2(C9H9O6)2]·6H2O}n, based on mixed 1,3,5-tris(imidazol-1-ylmethyl)benzene and cyclohexane-1,3,5-tricarboxylate ligands, there are two types of crystallographically independent Zn(II) centres, one in a general position and one on a crystallographic twofold axis. They have similar fourfold distorted tetrahedral coordination geometries, ligated by two monodentate carboxylate groups from two cyclohexane-1,3,5-tricarboxylate ligands and by two N atoms from two 1,3,5-tris(imidazol-1-ylmethyl)benzene ligands. The cyclohexane-1,3,5-tricarboxylate anions link the Zn(II) cations to generate a two-dimensional layered metal-organic structure running parallel to the (201) plane. Adjacent layers are further connected by tripodal 1,3,5-tris(imidazol-1-ylmethyl)benzene ligands, resulting in a three-dimensional network. The solvent water molecules are linked to the cyclohexane-1,3,5-tricarboxylate ligands via water-carboxylate O-H···O hydrogen bonds.
在基于1,3,5-三（咪唑-1-基甲基）苯和环己烷-1,3,5-三羧酸酯配体的锌（II）化合物聚[[双（μ3-环己烷-1,3,5-三羧酸根）双[μ3-1,3,5-三（咪唑-1-基甲基）苯]三锌（II）]六水合物]，{[Zn3(C18H18N6)2(C9H9O6)2]·6H2O}n中，存在两种晶体学上独立的锌（II）中心，一个处于一般位置，一个位于晶体学二重轴上。它们具有相似的四重扭曲四面体配位几何结构，由来自两个环己烷-1,3,5-三羧酸酯配体的两个单齿羧酸根基团以及来自两个1,3,5-三（咪唑-1-基甲基）苯配体的两个N原子配位。环己烷-1,3,5-三羧酸根阴离子连接锌（II）阳离子，生成平行于（201）平面的二维层状金属有机结构。相邻层通过三脚架状的1,3,5-三（咪唑-1-基甲基）苯配体进一步连接，形成三维网络。溶剂水分子通过水-羧酸根O-H···O氢键与环己烷-1,3,5-三羧酸酯配体相连。
