基于Keggin型多酸和金属有机配合物的超分子化合物  

Supramolecular compound based on Keggin-type polyoxometalate and metal-organic complex

作　　者：赵岷[1] 王秀丽[1] 李锦[1] 胡海良[1] 林宏艳[1] 

机构地区：[1]渤海大学化学化工学院,锦州121000

出　　处：《科学通报》2011年第9期658-663,共6页Chinese Science Bulletin

基　　金：国家自然科学基金(20871022);辽宁省优秀人才支持计划(2009R03)资助项目

摘　　要：利用水热技术合成了一种新的基于Keggin型多酸阴离子和非线性二唑衍生物的金属有机配合物阳离子的超分子化合物[Cu2(HL)7(H2O)2(SiW12O40)3]·(H2L)0.5·20.5H2O(1)(L=2-(3-吡啶基)-5-(4-吡啶基)-1,3,4-二唑),通过X射线单晶衍射、红外光谱、热重等对其结构进行了表征,并研究了其体修饰碳糊电极在1mol/LH2SO4溶液中的电化学行为.结果表明,该化合物属于单斜晶系,C2/c空间群,其基本构筑单元是Keggin型SiW12O404-阴离子、[Cu2(HL)7(H2O)2]11+金属有机配合物阳离子、游离的质子化的L配体和水分子.化合物1具有良好的电化学和电催化性质.A supramolecular compound, [Cu2（HL）7（H2O）2（SiW12O40）3]·（H2L）0.5·20.5H2O, based on Keggin-type polyoxometalate anions and metal-organic cations and non-linear 1,3,4-oxadiazole derivatives was obtained via hydrothermal reactions. We structurally characterized the compound using infrared spectroscopy, thermogravimetric analysis and single-crystal X-ray diffraction. The electrochemical properties of a bulk modified carbon-paste electrode based on the supramolecular compound were studied in 1 mol/L H2SO4 aqueous solution. The results indicate that the compound is a monoclinic system with a C2/c space group. The basic building blocks of the compound are Keggin-type SiW12O404-anions; metal-organic units, [Cu2（HL）7（H2O）2]11＋; a discrete protonated ligand, 2-（3-pyridyl）-5-（4-pyridyl）-1,3,4-oxadiazole; and water molecules. The supramolecular compound has a high level of electrocatalytic activity.

关 键 词：多金属氧酸盐 超分子化合物 金属有机配合物 水热合成 电催化 

分 类 号：O621.13[理学—有机化学]