The new bicapped Keggin-type compound(C7H8NO2)2(C3H4N2)4 [H7PV12O40(VO)2]·8 H2O has been hydrothermally synthesized and characterized by IR spectrum,single crystal X-ray diffraction analysis,TG/DTG and electrochemical studies.The complex belongs to triclinic system with space group P-1,cell parameters:a=1.15597(3)nm,b=1.22209(3)run,c=1.32804(2)nm.α=67.225(5)°,β=66.618(5)°,γ=75.374(6)°,V=1.576.91(6)nm3,Dc=2.204 g/cm3,Z=1,F(000)=1027,u=2.213mm-1,S=1.073,Rint=0.0278,the final R=0.0510 and wR=0.1306.The multiform intermolecular hydrogen bonds in the compound form 3D microporous framework in which are free imidazole molecules.%通过水热合成方法合成了一个双钒帽Keggin型多酸超分子化合物(C7H8NO2)2(C3H4N2)4[H7PV12O40(VO)2]·8H2O,采用IR、单晶X-射线衍射法、TG/DTG和循环伏安法对标题化合物进行结构和性质研究.结构解析表明,化合物属于三斜晶系,P-1空间群,晶胞参数a=1.15597(3) nm,b=1.22209(3)nm,c=1.32804(2)nm.α=67.225(5)°,β=66.618(5)°,γ=75.374(6)°,V=1.576.91 (6)nm3,Dc =2.204 g/cm3,Z=1,F(000)=1027.u=2.213mm-1,S=1.073,Rint=0.0278,最终偏差因子R=0.0510和wR =0.1306.该化合物通过氢键作用形成3D超分子结构,咪唑分子填充于氢键形成的空隙中.
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