三维三重内穿插金刚石结构4-（3-吡啶基）苯甲酸镉（II）配合物的合成、结构和性质

摘要

以4-（3-吡啶基）苯甲酸（4，3-Hpybz）为配体与过渡金属离子镉（Ⅱ）配位合成一个新颖的过渡金属配合物[Cd（4，3-pybz）2（H2O）]∙8.5H2O （1）.并通过红外、元素分析、热重及单晶X-衍射等对其进行表征. X-射线单晶衍射分析结果表明，配合物1为三重穿插的金刚石三维结构.配体4-（3-吡啶基）苯甲酸采用三齿配位模式即一个螯合羧基上两个氧原子和一个吡啶基上的氮原子与金属离子Cd（II）配位.配合物1包含有游离的水分子占据空穴，但是热重和客体交换导致配合物1的骨架不可逆塌陷.固体荧光测试表明配合物1具有强烈荧光发射.%A new three-dimensional(3D)cadmium(II)metal-organic frameworks,[Cd(4,3-pybz)2(H2O)]∙8.5H2O (1)(4,3-pybz = 4-(3-pyridyl)benzoate),have been solvothermally synthesized and structurally characterized.In this compound,the 4,3-pybz ligand serves as a three-dentate bridging ligand with one che⁃lating carboylate group and byridyl to Cd(II)ion into a 3-fold interpenetration of diamond networks.The sta⁃bility and photoluminescence properties of the compound have been studied.