Hydrolysis of N,N-dimethylformamide catalyzed by the Keggin H3(PMo12O40]:: isolation and crystal structure analysis of [(CH3)2NH2]3 [PMo12O40]

被引：46

作者：

Liu, SX ^{[1
]}

Wang, CM ^{[1
]}

Zhai, HJ ^{[1
]}

Li, DH ^{[1
]}

机构：

[1] NE Normal Univ, Dept Chem, Changchun 130024, Jilin, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2003年 / 654卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Keggin heteropolyacid; catalyze; amide hydrolysis; crystal structure; hydrolytic mechanism;

D O I：

10.1016/S0022-2860(03)00225-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Keggin heteropolyacid, H-3[PMo12O40].4H(2)O, catalyzes the hydrolysis of N,N-dimethylformamide (DMF) at room temperature. Crystal of the product [(CH3)(2)NH2](3)[PMo12O40] was obtained and characterized by IR spectrum and X-ray single crystal diffraction. Crystal data: trigonal, R (3) over bar, a = 16.5412 Angstrom, b = 16.5412 A, c = 25.154 Angstrom. alpha = 90degrees, beta = 90degrees, gamma = 120degrees, Volume = 5960 Angstrom(3), Z = 6. A mechanism is proposed to explain the function of heteropolyacid in the hydrolysis process. Formic acid is oxidized by 12-molybophosphate acid into carbon dioxide, leading the hydrolysis balance of DMF to shifting toward the generation of dimethylamine. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：215 / 221

页数：7

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