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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >A novel two-dimensional cadmium(II) complex: poly[diaquatris(μ4-cyclohexane-1,4-dicarboxylato)bis[2-(pyridin-4-yl)-1H-benzimidazole]tricadmium(II)
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A novel two-dimensional cadmium(II) complex: poly[diaquatris(μ4-cyclohexane-1,4-dicarboxylato)bis[2-(pyridin-4-yl)-1H-benzimidazole]tricadmium(II)

机译：一种新型的二维镉（II）配合物：聚[diaquatris（μ4-环己烷-1,4-二羧基基）双[2-（吡啶-4-基）-1H-苯并咪唑]三镉（II）

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摘要

The title compound, [Cd3(C8H10O4)3(C12H9N3)2(H2O)2]n or [Cd3(chdc)3(4-PyBIm)2(H2O)2]n, was synthesized hydrothermally from the reaction of Cd(CH3COO)2·2H2O with 2-(pyridin-4-yl)-1H-benzimidazole (4-PyBIm) and cyclohexane-1,4-dicarboxylic acid (1,4-chdcH2). The asymmetric unit consists of one and a half CdII cations, one 4-PyBIm ligand, one and a half 1,4-chdc2? ligands and one coordinated water molecule. The central CdII cation, located on an inversion centre, is coordinated by six carboxylate O atoms from six 1,4-chdc2? ligands to complete an elongated octahedral coordination geometry. The two terminal rotationally symmetric CdII cations each exhibits a distorted pentagonal–bipyramidal geometry, coordinated by one N atom from 4-PyBIm, five O atoms from three 1,4-chdc2? ligands and one O atom from an aqua ligand. The 1,4-chdc2? ligands possess two conformations, i.e.e,e-trans-chdc2? and e,a-cis-chdc2?. The cis-1,4-chdc2? ligands bridge the CdII cations to form a trinuclear {Cd3}-based chain along the b axis, while the trans-1,4-chdc2? ligands further link adjacent one-dimensional chains to construct an interesting two-dimensional network.
机译：由Cd（CH3COO）反应水热合成标题化合物[Cd3（C8H10O4）3（C12H9N3）2（H2O）2] n或[Cd3（chdc）3（4-PyBIm）2（H2O）2] n ）2·2H2O，含2-（吡啶-4-基）-1H-苯并咪唑（4-PyBIm）和环己烷-1,4-二羧酸（1,4-chdcH2）。不对称单元由一个半的CdII阳离子，一个4-PyBIm配体，一个半的1,4-chdc2α组成。配体和一个配位的水分子。中心的CdII阳离子位于一个反转中心，由六个1,4-chdc2？上的六个羧基O原子配位。配体来完成细长的八面体配位几何。两个末端旋转对称的CdII阳离子均表现出扭曲的五边形-双锥体结构，由4-PyBIm的一个N原子，三个1,4-chdc2的五个O原子配位。配体和一个来自水配体的O原子。 1,4-chdc2？配体具有两个构象，即e-trans-chdc2？和e，a-cis-chdc2?。顺式1,4-chdc2？配体桥接CdII阳离子沿b轴形成基于三核{Cd3}的链，而反式1,4-chdc2？配体进一步连接相邻的一维链以构建有趣的二维网络。

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