摘要
利用水热合成技术,成功合成了2种基于Keggin阴离子{XW12O40}4-(X=Si/Ge)的Cu(Ⅱ)配合物:H2[{Cu(4,4′-bipy)3/2(OH)(H2O)}2{XW12O40}].4H2O(X=Si,1;X=Ge,2),通过单晶X-射线衍射分析、红外光谱、热重-差热分析及电化学手段对配合物进行了结构表征和基本的性质研究.单晶X-射线衍射分析表明,它们互为异质同构体,晶体结构可描述为Cu(Ⅱ)离子通过OH-基团和4,4′-bipy分子连接形成了一维Z形链,链与链之间进一步通过Keggin阴离子的两个端氧原子与Cu(Ⅱ)离子桥联,形成二维层状结构;沿b轴方向观察1和2的晶体结构,发现邻近的层与层之间距离为14.9.
Two Cu（Ⅱ） coordination polymers based on heteropolyoxoanions {XW12O40}4-（X = Si/Ge）,[{Cu（4,4′-bipy）3/2（OH）（H2O）}2{H2XW12O40}]·4H2O（X = Si,1;X = Ge,2） have been synthesized under the hydrothermal condition and characterized by X-ray single crystal diffractometer,IR spectroscopy,thermogravimetric analysis and electrochemical measurement.Single-crystal X-ray diffraction analysis reveals that they are isostructural.Their structures can be considered as an 1D infinite zigzag chain built up through bridging Cu（Ⅱ） ions with OH-groups and 4,4′-bipy molecules.The chains are bridged via {XW12O40}4-（X = Si/Ge） anions into a 2D layered structure.Viewed along the b axis,the distance between the layers is 14.9.
出处
《辽宁师范大学学报（自然科学版）》
CAS
2012年第2期207-212,共6页
Journal of Liaoning Normal University:Natural Science Edition
基金
国家自然科学基金项目(20773057)
