A new nitrate-bridged coordination polymer, [Cd (phen) (NO3)2 (H2O)]n (1 , in which phen refers to 1,10-phenanthroline, has been prepared from the reaction of Cd (NO3)2 salt and phen/succinic acid in methanol/water medium. The crystal structure of the title complex was determined by singlecrystal X-ray diffraction technique at ambient condition, crystallizing in monoclinic system, space group P21(No. 4), with a=1. 029 79(10) nm, b=0. 725 41(7) nm, c=1. 030 16(10) nm, β=110. 486 0(10)°, V = 0.720 88 (12) nm3, Z = 2. Each CdⅡ center is six-coordinated with a highly distorted CdN2O4 sphere,comprising a chelating phen ligand, three oxygen donors from distinct nitrate anions and one water ligand.The CdⅡ ions are linked by the nitrate anions to form one-dimensional (1-D) infinite zigzag chains, which are extended to 2-D architectures via intermolecular C H…O interactions between phen molecules and nitrate anions. Moreover, there exist significant interlayer aromatic stacking interactions among these 2-D arrays, which are further connected through interlayer O-H…O bonds between water and nitrate moieties, affording a 3-D supramolecular network.%通过Cd(NO3)2与邻二氮杂菲(phen)和丁二酸在水-甲醇溶剂中反应制备了一个新型硝酸根桥联配位聚合物[Cd(phen)(NO3)2(H2O)]n(1).用X-射线衍射技术在室温下测定了标题化合物的晶体结构:单斜晶系,P21空间群(No.4),晶胞参数a=1.029 79(10)nm,b=0.725 41(7)nm,c=1.030 16(10)nm,β=110.486 0(10)°,V=0.720 88(12)nm3,Z=2.CdⅡ中心离子为六配位,处于由螯合phen配体、硝酸根离子和水所构成的CdN2O4扭曲多面体中.CdⅡ离子之间通过硝酸根离子连接形成一维无限锯齿形配位链,这些一维链通过phen和硝酸根离子间的C H…O相互作用进一步连接成二维结构.此外,这些二维结构之间存在芳环堆积相互作用,且通过层间水-硝酸根离子所组成的O-H…O氢键连接而形成三维超分子结构.
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