论文部分内容阅读
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 ) 2 NH2 ]3 [HSiMo12 O40 ]·2DMF·4H2 O ,测定了化合物的晶体结构。结果表明 ,晶体属三斜晶系 ,P墿空间群 ,晶胞参数 :a =1 2 10 1(2 )nm ,b =1 4 986 (3)nm ,c =1 4 992 (3)nm ,V =2 6 94 9(9)nm3 ,Z =2 ,R =0 0 310 ,Dc=2 6 83g/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。
[(CH3) 2NH2] 3 [HSiMo12O40] .2DMF.4H2O was prepared from silicomolybdic acid and N, N-dimethylformamide (DMF) in a mixed solvent of acetonitrile and water. The crystal structure of the compound. The results show that the crystal belongs to the triclinic system with P 墿 space group and unit cell parameters: a = 1 2 10 1 (2) nm, b = 14986 (3) nm, c = 14992 V = 2 6 94 9 (9) nm3, Z = 2, R = 0 0 310, Dc = 2 6 83 g / cm3. Structural analysis shows that the compound molecule consists of one heteropolyanion, three protonated dimethylamine, two dimethylformamide molecules and four crystal water molecules.