[Ni(2,2′-bpy)_2(H_2O)]_2[PMo_7~ⅥMo_5~ⅤV_2~ⅣO_(42)]的水热合成与晶体结构

Hydrothermal synthesis and crystal structure of [Ni（2,2′-bpy）_2（H_2O）]_2[PMo_7~ⅥMo_5~ⅤV_2~ⅣO_（42）]

用磷钼酸做原料,在水热条件下合成了一种新的二帽二支撑的Keggin型多金属氧酸盐[Ni(2,2′-bpy)2(H2O)]2[PMo7ⅥMo5ⅤV2ⅣO42],并通过元素分析、红外光谱、热重分析和X射线单晶衍射方法确定了该化合物的晶体结构.结构分析表明:该化合物属于三斜晶系,Pī空间群;晶胞参数a=1.186 6(2)nm,b=1.242 3(3)nm,c=1.257 4(3)nm,α=71.10(3)°,β=74.38(3)°,γ=87.43(3)°,V=1.687 0(6)nm3,Z=1,R1=0.058 0,wR2=0.156 8.

A new bicapped bisupporting Keggin-type polyoxometalate,[Ni（2,2′-bpy）2（H2O）]2,has been synthesized under hydrothermal conditions by directly using H3PMo21O40 as starting materials.It was structurally characterized by elemental analyses,IR,TG analysis and single-crystal X-ray diffraction.It crystallizes in the triclinic system,space group Pī,a= 1.186 6（2） nm,b=1.242 3（3） nm,c=1.257 4（3） nm,α= 71.10（3）°,β=74.38（3）°,γ=87.43（3）°,V=1.687 0（6） nm3,Z=1,R1=0.058 0,wR2=0.156 8.