Structural diversity of four coordination polymers based on asymmetric dicarboxylate: Effect of metal ions and N-donor ligands
作者:Xiaoli Chen、Xiaoge Zhang、Loujun Gao、Huali Cui
DOI:10.1016/j.ica.2015.11.007
日期:2016.2
N-donor ligands can greatly affect the coordination modes of (bdam)2− ion and the coordination geometries of CdII ion. The structural differences of 2, 3 and 4 indicate that metal ions also have great influence on the structures of the complexes. In addition, we have investigated the luminescence of 1–4 in the solid state at room temperature, revealing that the polymers are photoluminescent and their emissions
摘要为确定金属离子和N供体辅助配体对金属-有机骨架形成的影响,提出了四种新型金属配位聚合物[Cd(bdam)(phen)2] n(1),[Cd(bdam)( bpy)] n·nH2O(2),[Zn(bdam)(bpy)] n·nH2O(3)和[Ag4(bdam)2(dpe)] n(4)(H2bdam =二苯甲酮-2,4'-合成并表征了二羧酸,bpy = 2,2'-苯吡啶,phen = 1,10-菲咯啉,dpe = 1,2-(4-吡啶基)乙烷。复合体1是一维方波状链结构。1中的两个镉配体螯合到一个镉原子上。2显示基于通过(bdam)2-离子连接的双核镉单元的一维环链,而两个2,2'-bpy配体协调一个双核镉单元。3形成一维右旋螺旋链。与上述复合体不同的是,4具有基于bdam2-离子和dpe配体交联的八核银簇的二维网络结构,其中明显存在Ag⋯Ag相互作用。1和2的结构差异表明N-给体配体上的细