两个基于4-(1H-1,2,4-三氮唑)苯甲酸的稀土配位聚合物的合成、晶体结构及荧光性质(英文)

Two Lanthanide Coordination Polymers Derived from 4-(1H-1,2,3-Triazol-1-yl) benzoic Acid: Synthesis, Crystal Structures, and Fluorescence

以4-(1H-1,2,4-三氮唑)苯甲酸为配体,采用水热法合成了2种稀土配位聚合物[Tb(tbc3)(H2O)3]n(1)和{[Nd(tbc3)(H2O)3]·H2O}n(2)(Htbc=4-(1H-1,2,4-三氮唑)苯甲酸)。运用X-射线单晶衍射法对该配位聚合物进行了结构测定,并对其进行了元素分析、红外光谱、TG及荧光光谱表征。单晶结构表明,配位聚合物1为三斜晶系,空间群P1,配位聚合物2属于单斜晶系,空间群为P21/c。配位聚合物1和2均为一维链结构,均通过非共价键作用形成三维超分子构造。

Two lanthanide Coordination Polymers, [Tb（tbc3）（H2O）3]n （1H-1,2,3-triazol-l-yl） benzoic acid], have been synthesized （1） and {[Nd（tbc3）（H2O）3]·H2O}. （2）[Htbc=4- by hydrothermal method and structurally characterized by elemental analyses, FT-IR spectra, and thermal studies, fluorescence spectra, as well as single crystal X-ray diffraction. Structural determination reveals that complex 1 belongs to triclinic system and space group P1. And complex 2 crystallizes in monoclinic system, space group P2 1/c. Both 1 and 2 possess a one dimensional chain structure constructed from carboxylate O atoms of Htbe ligand bridging the units. Through non-covalent interactions the complex molecules are assembled into 3D supramolecular network structures.