以 1,3-二(咪唑)丙烷(1,3-BIP)、4,4'-(1H-1,2,4-三唑-3,5-二基)二苯甲酸(H2BCT)和 Co(NO3)2·3H2O 为原料,在溶剂热的条件下构筑了一例 Co 配位聚合物:{[Co2(H2O)2(1,3-BIP)(BCT)2]n·DMF·H2O}(SNUT-3),利用X射线单晶衍射、元素分析(EA)、红外光谱(FT-IR)、粉末X射线衍射(PXRD)和热重分析(TGA)对配位聚合物SNUT-3进行表征,结果表明SNUT-3属于三斜晶系,P-1空间群,有机配体以独特的连接方式构成了(4,4)拓扑结构,并通过分子间氢键形成3D超分子结构.此外,粉末X射线衍射结果表明SNUT-3具有较高的相纯度和良好的重复性,热重分析结果表明SNUT-3的空间结构可以在25～380℃稳定存在.
Crystal Structure and Properties of Co(Ⅱ)Coordination Polymer Constructed by Mixed Ligands
Coordination polymer{[Co2(H2O)2(1,3-BIP)(BCT)2]n·DMF·H2O}(SNUT-3)was constructed from 1,3-dimidazolypropane(1,3-BIP),4,4'-(1H-1,2,4-triazole-3,5-diyl)dibenzoic acid(H2BCT)and Co(NO3)2·3H2O under solvothermal conditions,its structure was determined by EA,FT-IR,TGA,PXRD and X-ray single crystal diffraction analysis.The results showed that SNUT-3 crystallized in trigonal system with space group P-1,the ligand constituted in a unique way to form a(4,4)topology and 3D supramolecular structure through intermolecular hydrogen bonds.In addition,PXRD result showed that SNUT-3 had high phase purity and good repeatability,TGA result showed that the spatial structure was stable at 25～380℃.
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