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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >A two-dimensional cadmium(II) coordination polymer based on 5-(pyridin-4-yl)isophthalic acid: poly[[tetraaquabis[μ3-5-(pyridin-4-yl)isophthalato]dicadmium(II)] pentahydrate]
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A two-dimensional cadmium(II) coordination polymer based on 5-(pyridin-4-yl)isophthalic acid: poly[[tetraaquabis[μ3-5-(pyridin-4-yl)isophthalato]dicadmium(II)] pentahydrate]

机译：基于5-（吡啶-4-基）间苯二甲酸的二维镉（II）配位聚合物：聚[[四季铵盐[μ3-5-（吡啶-4-基）间苯二甲酸] [二水合物]] [二水]

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摘要

The title CdII compound, {[Cd2(C13H7NO4)2(H2O)4]·5H2O}n, was synthesized by the hydrothermal reaction of Cd(NO3)2·4H2O and 5-(pyridin-4-yl)isophthalic acid (H2L). The asymmetric unit contains two crystallographically independent CdII cations, two deprotonated L2? ligands, four coordinated water molecules and five isolated water molecules. One of the CdII cations adopts a six-coordinate octahedral coordination geometry involving three O atoms from one bidentate chelating and one monodentate carboxylate group of two different L2? ligands, one N atom of another L2? ligand and two coordinated water molecules. The second CdII cation adopts a seven-coordinate pentagonal–bipyramidal coordination geometry involving four O atoms from two bidentate chelating carboxylate groups of two different L2? ligands, one N atom of another L2? ligand and two coordinated water molecules. Each L2? ligand bridges three CdII cations and, likewise, each CdII cation connects to three L2? ligands, giving rise to a two-dimensional graphite-like 63 layer structure. These two-dimensional layers are further linked by O—H...O hydrogen-bonding interactions to form a three-dimensional supramolecular architecture. The photoluminescence properties of the title compound were also investigated.
机译：通过Cd（NO3）2·4H2O与5-（吡啶-4-基）间苯二甲酸（H2L）的水热反应合成了标题CdII化合物{[Cd2（C13H7NO4）2（H2O）4]·5H2O} n ）。不对称单元含有两个晶体学上独立的CdII阳离子，两个去质子化的L2 +。配体，四个配位的水分子和五个孤立的水分子。 CdII阳离子之一采用六坐标八面体配位几何结构，其中涉及三个O原子，分别来自一个二齿螯合和两个不同L2的单齿羧酸基。配体，另一个L2的一个N原子？配体和两个配位的水分子。第二个CdII阳离子采用七坐标的五边形-双锥体配位几何结构，其中涉及来自两个不同L2的两个双齿螯合羧酸酯基团的四个O原子。配体，另一个L2的一个N原子？配体和两个配位的水分子。每个L2？配体桥接三个CdII阳离子，同样，每个CdII阳离子连接至三个L2？配体，产生二维的类石墨63层结构。这些二维层通过OH-H ... O氢键相互作用进一步连接，从而形成三维超分子体系。还研究了标题化合物的光致发光性质。

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