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合成了一种新颖的修饰型的Keggin结构多金属氧酸盐超分子化合物,并用单晶衍射仪测定了其晶体结构,元素分析及红外光谱等进一步佐证了化合物的结构.配合物为三斜晶系,P-1空间群,晶胞参数为a=12.969 4(11),b=14.025 0(11),c=24.518 0(19),α=86.511 0(10)°,β=83.033 0(10)°,γ=62.777 0(10)°,V=3 936.4(5)3,Z=1.配合物是一种特殊的双帽双支撑型的多金属氧酸盐,它是由双帽假Keggin[PMo7ⅥMo5ⅤO40(VⅣO)2]4-单元,{Co(2,2′-bipy)2(H2O)}和[Co(bipy)3]2+部分组成.其中,两个金属有机阳离子{Co(2,2′-bipy)2(H2O)}和两个盖帽的钒原子上的末端氧原子通过共价连接在[PMo7ⅥMo4ⅤVⅤO40(VⅣO)2]上,并通过氢键作用形成三维层状结构.
A novel modified Keggin structure polyoxometalate supramolecular compound was synthesized and its crystal structure, elemental analysis and IR spectra were further confirmed by single crystal diffractometer.The structure of the compound is triclinic A = 12.569 4 (11), b = 14.025 0 (11), c = 24.518 0 (19), α = 86.511 0 (10) °, β = 83.033 0 ( 10) °, γ = 62.777 0 (10) °, V = 3 936.4 (5) 3, Z = 1. The complex is a special double capped double supported polyoxometallate, Pseudo-Keggin [PMo7ⅥMo5VO40 (VIVO) 2] 4-unit, {Co (2,2’-bipy) 2 (H2O)} and [Co (bipy) 3] 2+ moieties in which two metal organic cations {Co (2,2’-bipy) 2 (H2O)} and the two capped vanadium atoms are covalently attached to [PMo7VIMo4VVO40 (VIVO) 2] and form a three-dimensional layer structure by hydrogen bonding.