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在水溶液中合成了含2,3-吡嗪二羧酸配体的3个镉配位聚合物,{[Cd(pzdc)(2,2′-bpy)]·H2O}n(1),{[Cd(pzdc)(2,2′-bpy)]2H2O}n(2)和{[Cd(pzdc)(H2O)2].2H2O}n(3)。配合物1属单斜晶系,P21/c空间群;配合物2为单斜晶系,P21/n空间群;配合物3为单斜晶系,P21/c空间群。每个pzdc配体通过4个配位原子与3个金属Cd配位,在配合物1和2中形成了具有(4,82)网格状的二维平面构型,而在配合物3中得到了一维链状和氢键3D网络结构。尽管配合物1和2的分子只是结晶水分子数目存在差异,且具有相同的(4,82)网格状二维平面构型,但是他们的分子结构趋向存在很大差别。配合物1和3的荧光光谱均在415 nm处出现较强的发射峰。
Three cadmium coordination polymers containing 2,3-pyrazinedicarboxylic acid ligands were synthesized in aqueous solution, {{Cd (pzdc) (2,2’-bpy)] · H2O} n [Cd (pzdc) (2,2’-bpy)] 2H2O} n (2) and {[Cd (pzdc) (H2O) 2] .2H2O} n (3). Complex 1 is a monoclinic, P21 / c space group; complex 2 is monoclinic, P21 / n space group; complex 3 is monoclinic, P21 / c space group. Each pzdc ligand is coordinated to three metal Cds by 4 coordinating atoms, forming a two-dimensional planar configuration with (4,82) grids in complexes 1 and 2, whereas in complex 3 The one-dimensional chain and hydrogen bond 3D network structure are obtained. Although the number of molecules in complexes 1 and 2 is only different from that of the crystal water molecules and they have the same (4,82) grid-like two-dimensional planar configuration, their molecular structures tend to be very different. Fluorescence spectra of complexes 1 and 3 showed strong emission peaks at 415 nm.