用450 W高压汞灯照射VO34-/MeOH/AsO43-,利用光化学反应合成了杂多钒酸盐[(CH3)4N]3H6[AsV12O40(VO)2].用红外光谱、紫外可见光谱对其进行了表征,并采用四圆衍射测定了其晶体结构.结果表明:该化合物属于单斜晶系,P2(1)空间群;晶胞参数a=1.110 5 nm,b=1.974 70 nm,c=1.141 78 nm,α=γ=90.00°,β=93.104 0(10)°,V=2.501nm3,Z=2.该化合物中的Keggin结构[AsV12O40(VO)2]9-中含有两个[VO]帽,且通过超分子作用形成了三维超分子结构.
The heteropolyvanadate [(CH3)4 N]3H6[AsV12O40(VO)2] has been synthesized by photochemistry method.Crystal data: monoclinic P2/1;a=1.110 5 nm,b=1.974 70 nm,c=1.141 78 nm,α=γ=90.00°,β=93.104 0(10)°,V=2.501 nm3,Z=2.X-ray diffraction result reveals that the heteropolyanion [AsV12O40(VO)2]9-has a bi-capped Keggin structure,and these subunits are further connected into an extensive three-dimensional(3D) framework depending on the interaction of terminal oxygens.