沸石咪唑酯骨架材料Co(C_7H_5N_2)_2·1.5H_2O的合成与晶体结构

Synthesis and crystal structure of zeolitic imidazolate framework Co(C_7H_5N_2)_2·1.5H_2O

以2-羧基苯并咪唑配体与过渡金属离子Co2+为前驱体,通过溶剂热反应得到一个新的沸石咪唑酯骨架材料Co(C7H5N2)2.1.5H2O(1),采用单晶X射线衍射、红外光谱、热重分析、粉末X射线衍射等对产物进行了系统表征.配合物1属三斜晶系,空间群R-3,Co2+离子通过有机配体相连构成沸石结构,骨架中存在笼状结构和一维隧道孔.

Using the transition metal Co2＋ and 2-carboxylbenzimidazole as precursors,a porous zeolitic imidazolate framework Co（C7H5N2）2·1.5H2O（1） is synthesized through solvothermal method.Compelx 1 is characterized by single-crystal XRD,IR,TG,and powder XRD.Single-crystal XRD reveals that complex 1 belongs to trigonal system with the space group R-3.In the structure,the Co2＋ centers are connected by organic ligands to form a porous zeolitic imidazolate framework,in which the cage structure and one-dimensional（1D） channel are involved.