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由二乙醇胺与H4SiW12O40*nH2O合成了[(HOCH2CH2)2NH2]8*[SiW12O40]2*H2O. 单晶结构解析结果表明,晶体属三斜晶系,空间群P1,晶胞参数:a=1.353 2(3) nm,b=1.923 3(4) nm,c=2.047 2(4) nm,α=89.28(3)°,β=85.49(3)°,γ=82.99(3)°,Z=2,V=5.275 4 nm3,R=0.060 2,Rw=0.140 2. 标题化合物分子由2个杂多阴离子、8个质子化的二乙醇胺、1个结晶水组成. 化合物具有可逆光色性. 热分析结果表明,化合物阴离子在548.5 ℃左右分解.

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