以硅钼酸和N,N-二甲基甲酰胺(DMF)为原料,在乙腈和水的混合溶剂中,制得[(CH3)2NH2]3-[HSiMo12O40]*2DMF*4H2O,测定了化合物的晶体结构. 结果表明,晶体属三斜晶系,Pī空间群,晶胞参数:a=1.210 1(2) nm,b=1.498 6(3) nm,c=1.499 2(3) nm,V=2.694 9(9) nm3,Z=2,R=0.031 0,Dc=2.683 g/cm3. 结构分析表明,化合物分子由1个杂多阴离子,3个质子化的二甲胺,2个二甲基甲酰胺分子和4个结晶水分子组成.
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