Solvothermal reaction of 2,5-thiophenedicarboxylic acid and 3,5-bis(imidazol-1′-yl)pyridine with cadmium nitrate provided a new coordination polymer, namely {[Cd2(tdc)2(bimpy)](2H2O)(2DMF)}n (1) where H2tdc = 2,5-thiophenedicarboxylic acid, and bimpy = 3,5-bis(imidazol-1′-yl)pyridine. The compound has been structurally characterized by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectroscopy, powder X-ray diffraction, and thermogravimetric analyses. Crystallographic data show that the compound crystallizes in the monoclinic P21/n space group and exhibits an interesting three-dimensional network comprising binuclear Cd(II) structural unit, which could be described as a (3,7)-connected topology. At room temperature, compound 1 exhibits strong fluorescence emission in the solid state. GRAPHICAL ABSTRACT

中文翻译：

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具有(3, 7)连接拓扑结构的三维Cd(II)配位聚合物的合成、结构和发光特性

2,5-噻吩二甲酸和3,5-双(咪唑-1'-基)吡啶与硝酸镉的溶剂热反应提供了一种新的配位聚合物，即{[Cd2(tdc)2(bimpy)](2H2O)(2DMF) )}n (1) 其中 H2tdc = 2,5-噻吩二甲酸，bimpy = 3,5-双（咪唑-1'-基）吡啶。该化合物已通过单晶 X 射线衍射分析进行结构表征，并通过元素分析、红外光谱、粉末 X 射线衍射和热重分析进一步表征。晶体学数据表明，该化合物在单斜 P21/n 空间群中结晶，并表现出一个有趣的三维网络，包括双核 Cd(II) 结构单元，可描述为 (3,7) 连接拓扑。在室温下，化合物 1 在固态下表现出强烈的荧光发射。