有机-无机杂化四核镍取代的夹心型砷钨酸盐的合成与晶体结构

Synthesis and crystal structure of an organic-inorganic hybrid tetranickel substituted sandwich-type arsenotungstate

在水热条件下,合成了一种有机-无机杂化四核镍取代的夹心型砷钨酸盐[Ni(detaH)2(H2O)]2[Ni(deta)2][Ni4(H2O)2(B-α-AsW9O34)2].4H2O(deta=二乙烯三胺),并借助IR光谱和X射线单晶衍射对其结构进行了表征.标题化合物属于正交晶系,Pbca空间群,晶胞参数:a=2.168 8(3)nm,b=1.943 5(3)nm,c=2.188 6(3)nm,V=9.225(2)nm3,Z=4,Dc=4.122 g/cm3,GOOF=1.146,R1=0.034 8,wR2=0.081 0.X射线单晶结构分析表明,标题化合物分子由1个四核镍取代多阴离子[Ni4(H2O)2(B-α-AsW9O34)2]10-,2个支撑的配阳离子[Ni(detaH)2(H2O)]4+,1个游离的配阳离子[Ni(deta)2]2+和4个结晶水分子组成.

An organic-inorganic hybrid tetranickel substituted sandwich-type arsenotungstate [Ni（detaH）2（H2O）]2[Ni（deta）2][Ni4（H2O）2（B-α-AsW9O34）2]·4H2O has been hydrothermally synthesized and structurally characterized by IR spectrum and X-ray single-crystal diffraction.The title compound crystallizes in the orthorhombic space group Pbca with a = 2.168 8（3） nm,b = 1.943 5（3） nm,c = 2.188 6（3） nm,V = 9.225（2） nm3,Z = 4,Dc = 4.122 g/cm3,GOOF = 1.146,R1 = 0.034 8,wR2 = 0.081 0.X-ray structural analysis indicates that the title compound consists of 1 tetranickel substituted polyoxoanion [Ni4（H2O）2（B-α-AsW9O34）2]10-,2 supporting [Ni（detaH）2（H2O）]4＋ cations,1 discrete [Ni（deta）2]2＋ cation and 4 lattice water molecules.