新型稀土配位聚合物Ce(tda)(ox)0.5(phen)n的合成及拓扑结构

摘要

A novel lanthanide coordination polymer with the formulas[Ce(tda)(ox)_(0.5)phen)]_n (H2tda=thiodiglycolic acid, H2ox=oxalic acid, phen=1,10-phenanthroline) have been synthesized and structurally characterized. Single crystal X-ray diffraction studies show that the coordination polymer are a 2D network and exhibit an unprecedented (4,5)-connected (46)(44·66)2 topology, in which the lanthanide ions act as unusual 5-connected nodes, and an edgesharing dinuclear polyhedral [Ce20t2N4]was found. Furthermore, through strong π-π interactions, the 2D network structure are cross-linked to generate to generate a 3D upramolecular architectures.%利用混合配体((H2tda＝亚硫基二乙酸,H2ox＝乙二酸,phen=1, 10-菲咯琳)与CeC13·5H2O反应,合成了新型稀土配合物[Ce(tda)(ox)_(0.5)(phen)]_n,单晶结构分析表明:配合物以共边的多面体[Ce2O_(12)N_4]为基本单元构筑二维结构,并通过π-π堆积作用拓展为三维超分子体系.该二维结构具有(4,5)连接的(4~6)(4~4·6~6)_2拓扑结构,在拓扑结构中稀土离子呈现不寻常的5连接点.