三个稀土金属中心配位聚合物的合成、结构及表征

Syntheses, structures and characterizations of three rare earth metal center coordination polymers

摘要:

本文利用水/溶剂热合成法，以5-四氮唑基-间苯二甲酸为有机配体分别与Pr3+、Sm3+、Nd3+三种稀土金属离子配位，得到了三个化合物，分别为[Pr(TZI)(H2O)5]•5H2O (1)、[Sm(TZI) (H2O)5]•5H2O (2)和[Nd(TZI) (H2O)5]•2H2O (3). 单晶X-射线衍射分析表明三种化合物为相似的一维链状结构，对这三个结构进行了研究以及对比分析讨论，同时，研究了它们的热稳定性.

Abstract:

Three coordination polymers ([Pr(TZI)(H2O)5]•5H2O (1), [Sm(TZI)(H2O)5]•5H2O (2) and [Nd(TZI)(H2O)5]•2H2O (3)) have been hydro/solvothermally synthesized by involving 5-tetrazolylisophthalic acid (H3TZI) as ligand and rare earth metal ions (Pr3+、Sm3+、Nd3+) as metal centers. Crystal structures characterized by powder X-ray diffraction (XRD) and X-ray single crystal diffraction showed that the three compounds have one-dimensional chain structure, and structure differences among the complexes have been discussed in detail. Meanwhile, the thermal stabilities of them are researched.