引用本文:
王敬平, 郭东杰, 牛景扬. [(HOCH2CH2)2NH2]8·[SiW12O40]2·H2O的合成、表征、晶体结构及性质[J]. 应用化学,
2002, 19(9): 852-857.
Citation: WANG Jing-Ping, GUO Dong-Jie, NIU Jing-Yang. Preparation, Characterization, Crystal Structure of a Charge-Transfer Complex Based on H4SiW12O40·nH2O and Diethanolamine[J]. Chinese Journal of Applied Chemistry, 2002, 19(9): 852-857.
Citation: WANG Jing-Ping, GUO Dong-Jie, NIU Jing-Yang. Preparation, Characterization, Crystal Structure of a Charge-Transfer Complex Based on H4SiW12O40·nH2O and Diethanolamine[J]. Chinese Journal of Applied Chemistry, 2002, 19(9): 852-857.
[(HOCH2CH2)2NH2]8·[SiW12O40]2·H2O的合成、表征、晶体结构及性质
摘要:
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=1.3532(3)nm,b=1.9233(4)nm,c=2.0472(4)nm,T=89.28(3)°,U=85.49(3)°,V=82.99(3)°,Z=2,V=5.2754 nm3,R=0.0602,Rw=0.1402。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。
English
Preparation, Characterization, Crystal Structure of a Charge-Transfer Complex Based on H4SiW12O40·nH2O and Diethanolamine
Abstract:
A charge-transfer complex, [(HOCH2CH2)2NH2]8·[SiW12O40]2·H2O, comprised of herteropoly acid (H4SiW12O40) and an organic substrate diethanolamine has been synthesized and characterized. Colorless crystals of the title compound were obtained from 0.1 mol/L HCl solution. Spectral data support the presence of a sizable electronic interaction between the organic substrate and the inorganic anion in the solid complex. It is strongly photosensitive under illumination of sunlight, resulting in charge-transfer in oxidation of diethanolamine and reduction of poly-oxometalate. The crystal of the title compund belongs to triclinic, space group P1, with a=1.3532(3) nm, b=1.9233(4) nm, c=2.0472(4) nm, T=89.28(3)°, U=85.49(3)°, V=82.99(3)°, Z=2, V=5.2754 nm3, _=26.188 mm-1 and F(000)=5 844.
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Key words:
- heteropolyoxometalate
- / tungstosilicate
- / diethanolamine
- / crystal structure
- / Keggin structure
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