A novel layer formed by paradodecatungstate clusters and {Cu(en)(2)}(2+) bridging groups: Synthesis and characterization of [{Cu(en)(2)}(4)(H4W12O42)] center dot 9H(2)O

作者：He Li Wen; Lin Bi Zhou^*; Liu Xue Zhong; Huang Xiu Feng; Feng Yun Long

来源：Solid State Sciences, 2008, 10(3): 237-243.

DOI：10.1016/j.solidstatesciences.2007.09.002

• polyoxometalates
• cluster compounds
• organic-inorganic hybrid material
• crystal structure
• electrochemical property
• catalytic property

A novel two-dimensional solid, [{Cu(en)(2)}(4)(H4W12O42)]center dot 9H(2)O (en = ethylenediamine), has been prepared under mild hydrothermal conditions. Single crystal X-ray diffraction revealed that each paradodecatungstate [H4W12O42](8-) Cluster in the title compound is connected with its four adjacent clusters through eight {Cu(en)(2)}(2+) bridging groups into a two-dimensional layered structure. Its cyclic voltammetric behavior in aqueous electrolyte demonstrated that its modified carbon paste electrode has a good stability. A probe reaction indicated that the catalytic activity of paradodecatungstates in epoxidation of maleic anhydride has been enhanced by assembling paradodecatungstate clusters into extended structures.

• 出版日期2008-3
• 单位华侨大学; 浙江师范大学