以2-硝基-苯-1,4-二氧二乙酸为柔性配体的[Ca(L)(H2O)2] n的合成、晶体结构及表征

采用缓慢蒸发法以2-硝基-苯-1,4-二氧二乙酸为柔性配体合成新型多孔配位聚合物[Ca(nbdo)(H₂O)₂] _n，并对其进行元素、红外光谱、X-射线单晶衍射、DSC、TG-DTG和荧光光谱的分析测试。晶体结构显示为一维微孔结构，由于四种形式的氢键的存在使晶胞堆积形成了三维超分子网络结构。热分析表明该化合物在375K时失去了水分子，当温度升高到了550K时，配位聚合物的网状结构出现了破坏。荧光光谱分析测试表明该化合物在室温固体状态下320nm处具有较强的荧光性。

Synthesis,Crystal Structure and Characterization of [Ca(L)(H2O)2]n Constructed by Flexible Ligand 2‐Nitro‐benzene‐1,4‐di(oxyacetate)

A new microporous coordination polymer [Ca(nbdo)(H₂O)₂]_n, constructed by 2‐nitro‐benzene‐1,4‐di(oxyace‐tate), was obtained by a slow evaporation method and characterized by elemental analysis, FT‐IR, single‐crystal X‐ray diffraction, DSC, TG‐DTG and fluorescent spectral analysis. The crystal structure reveals that there is 1‐D microporous channel, which is bridged by four kinds of hydrogen bonds to generate a 3‐D supramolecular network. The thermal analysis of the complex shows that it began to lose water molecules at 375 K, and when the temperature was up to 550 K the framework of the coordination polymer began to collapse. The luminescence property was investigated and the complex shows photoluminescence in the solid state at room temperature, excited at 320 nm.