Abstract

By adopting one imidazole multi-carboxylate ligand, 2-(3-carboxylphenyl)-1H-imidazole-4,5-dicarboxylic acid (m-CPhH₄IDC) and one N-containg ligand, 2,2′-bipyridine (2,2′-Bipy) to react with Cd(NO₃)₂, under solvothermal condition, a two-dimensional metal-organic framework, {[Cd₆(m-CPhHIDC)₄(2,2′-Bipy)₆] · 4H₂O}_n (I) has been sucessfully constructed. The structure has been determined by single-crystal X-ray diffraction analysis (CIF files CCDC no. 1480230) and further characterized by elemental analyses, IR spectra, and thermogravimetric analysis. MOF I exhibits a rare (3,4)-connected 2D structure bearing two kinds of organic ligands. According to the crystal data, the coordination ability and mode of the imidazole multi-carboxylate ligand are discussed. Furthermore, the thermal stability and solid-state photoluminescent properties of MOF I have been investigated.

中文翻译：

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咪唑多羧酸盐基二维Cd（II）MOF：制备，晶体结构和性能

摘要

通过采用一个咪唑多羧酸盐配体，2-（3-羧基苯基）-1 H-咪唑-4,5-二羧酸（m -CPhH ₄ IDC）和一个含氮配体2,2'-联吡啶（2 ，2'-Bipy）在溶剂热条件下与二维金属有机骨架{[Cd ₆（m -CPhHIDC）₄（2,2'-Bipy）₆ ]·与Cd（NO ₃）₂反应。 4H ₂ O} _n（I）已成功构建。该结构已通过单晶X射线衍射分析（CIF文件CCDC 1480230）确定，并进一步通过元素分析，IR光谱和热重分析进行了表征。MOF I展示了一种稀有的（3,4）连接的2D结构，带有两种有机配体。根据晶体数据，讨论了咪唑多羧酸盐配体的配位能力和方式。此外，已经研究了MOF I的热稳定性和固态光致发光性质。