基于锌离子与柔性双咪唑配体构筑的α-Po网格

The α-Po Network Based on Zn(Ⅱ) Ion and Flexible Bisimidazole

摘要: 以1，4-二（1-咪唑基甲基）苯（L）和Zn（NO₃）₂·6H₂O为原料，在水热条件下合成了一例新的配位聚合物——Zn（L）₃（NO₃）₂（1），通过元素分析、红外光谱、X-射线单晶衍射、X-射线粉末衍射等技术对所得单晶进行结构表征.结果表明：该配合物属于三斜晶系、P-1空间群，呈现三重穿插的三维网格特征.Zn（Ⅱ）作为中心离子可被视为6-连节点，通过中性配体L桥联，形成一个带正电荷的α-Po（pcu）网格，游离的NO₃^-阴离子位于网格孔道中.另外，还研究了该配合物在室温条件下的荧光和热稳定性.

Abstract: A new compound,Zn(L)₃(NO₃)₂ (1), was synthesized by 1,4-bis(imidazol-1-ylmethyl)benzene (L) and Zn(NO₃)₂·6H₂O under hydrothermal condition. The structure was characterized by elemental analysis, IR spectroscopy,single crystal X-ray diffraction, and powder X-ray diffraction.The results showed that tile compound exhibited a triply interpenetrating three-dimensional (3D) framework with triclinic system, space group P-1. The central ion Zn(Ⅱ) could be regarded as six-connected node, which was bridged by the neutral ligand L to form a α-Po (pcu) network with positive charges. In addition, the photoluminescence property in the solid state and thermal analysis of compound 1 were also investigated.