Vibrational study of 1,2,4-triazole-thione and its N-methyl derivatives. Tautomerism and association

被引：19
|
作者：
Elhajji, A [1 ]
Ouijja, N [1 ]
Idrissi, MS [1 ]
GarrigouLagrange, C [1 ]
机构：
[1] CTR RECH PAUL PASCAL, F-33405 TALENCE, FRANCE
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 1997年 / 53卷 / 05期
关键词：
association; tautomerism; 1,2,4-Triazole-thione and N-methyl derivatives; vibrational spectra; SPECTRA; IMIDAZOLINE-2-THIONE;
D O I：
10.1016/S1386-1425(96)01841-0
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The vibrational spectra of triazole-thione. 1-methyl-triazole-thione, 4-methyl-triazole-thione, 1,4-dimethyl-triazolethione and their deuterated homologues have been studied in the range 4000-200 cm(-1). An assignment of the normal modes is proposed. From this analysis. we conclude that triazole-thione and its N-methyl derivatives exist in only one tautomeric form in the solid state. The comparison of the vibrational spectra in the solid state of 4-methyl-triazolethione with those of solutions in various polar solvents enables us to explain the presence of two absorptions assigned to gamma(CH) and gamma(NH) modes of this molecule by CH and NH groups in different environments. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：699 / 706
页数：8
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