以BiW_9为结构基元的夹心型多金属氧酸盐的合成与晶体结构

Synthesis and Crystal Structure of a New Polyoxometalate Based on the BiW_9 Unit

用溶液法,通过控制反应温度及溶液pH等条件,首次合成了H8[Bi2W18Co4(H2O)10O66Na2(H2O)10]·13H2O配合物.通过元素分析、IR、TG及X-射线单晶衍射分析等手段对合成配合物的结构进行了表征,结果表明,标题配合物是由两个[β-B-BiW9O33]9-结构单元通过四个Co2+离子连接形成夹心型结构.该配合物的晶体学数据为:单斜晶系,空间群P21/n,a=12.4666(5),b=12.7684(6),c=29.3357(13),α=90°,β=101.152(1)°,γ=90°,V=4581.4(3)3,Z=2.

A new compound H8[Bi2W18Co4（H2O）10O66Na2（H2O）10]·13H2O has been synthesized under controlling the temperature and pH in aqueous solution,structurally characterized by IR,TG and single-crystal X-ray diffraction.The title compound exhibit two [β-B-BiW9O33]9-units are held together by four Co2＋ions.The crystal data for 1： Monoclinic,space group P 21/n,a= 12.4666（5）,b= 12.7684（6）A,c= 29.3357（13）A,α= 90°,β= 101.152（1）°,γ=90°,V= 4581.4（3）A3,Z=2.