Solvothermal reaction of Co(II)/Zn(II) salt with 1,2,4,5-benzene tetracarboxylic dianhydride (BTD) leads to the formation of two coordination polymers based on benzene-1,2,4,5-tetracarboxylic acid (H₄BTC), [Co₂(BTC)(DMA)(H₂O)]_n (1) (DMA = N,N′-dimethylacetamide) and [Zn₄(BTC)₂(H₂O)₆]_n·3nH₂O (2). Both 1 and 2 have been characterized by infrared spectra (IR), elemental analyses (EA), thermogravimetric analyses (TG) and single-crystal/powder X-ray diffraction (XRD). The results of the single-crystal X-ray diffraction analyses reveal that both compounds are 3D coordination polymers. In 1, 1D Co(II)-carboxylate chains are linked together by the organic moiety of BTC⁴⁻ ligands, forming a 3D coordination polymer. In 2, 1D Zn-BTC⁴⁻ ribbons are connected together by [Zn₂(H₂O)₃] building units, generating a 3D porous framework with 1D rectangular channels. Gas sorption measurements reveal that the two compounds can not adsorb N₂. Photoluminescent study indicates that 2 exhibits luminescent properties with an emission peak at 527 nm.

中文翻译：

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苯1,2,4,5-四羧酸（H ₄ BTC）的两种配位聚合物：原位配体的合成，结构和发光性能†

Co（II）/ Zn（II）盐与1,2,4,5-四羧酸二酐（BTD）的溶剂热反应导致形成两种基于苯-1,2,4,5-四羧酸的配位聚合物（H ₄ BTC），[Co ₂（BTC）（DMA）（H ₂ O）] _n（1）（DMA = N，N'-二甲基乙酰胺）和[Zn ₄（BTC）₂（H ₂ O）₆ ] _n ·3 n H ₂ O（2）。既1和2已经通过红外光谱（IR），元素分析（EA），热重分析（TG）和单晶/粉末X射线衍射（XRD）进行了表征。X射线单晶衍射分析的结果表明，这两种化合物都是3D配位聚合物。在1中，一维Co（II）-羧酸根链通过BTC ^4-配体的有机部分连接在一起，形成3D配位聚合物。在2中，一维Zn-BTC ^4-带通过[Zn ₂（H ₂ O）₃ ]构建单元连接在一起，从而生成具有一维矩形通道的3D多孔框架。气体吸附测量表明这两种化合物不能吸附N ₂。光致发光研究表明2具有发光特性，发射峰位于527 nm。