VIBRATIONAL STUDY OF OXALIC ACID-PYRAZINE HYDROGEN-BONDED ADDUCTS

被引:13
作者
BELABBES, Y [1 ]
LAUTIE, A [1 ]
机构
[1] LASIR,CNRS,F-94320 THIAIS,FRANCE
关键词
COMPLEXATION; HYDROGEN BONDS; INFRARED SPECTROMETRY; OXALIC ACID; PYRAZINE; RAMAN SPECTROMETRY;
D O I
10.1016/0924-2031(94)00093-V
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Infrared and Raman spectra of anhydrous and hemi-hydrated pyrazine-oxalic acid crystallized complexes and their deuterated analogues have been investigated between 4000 and 30 cm(-1) in the 400-90 K temperature range. Pyrazine retains its high molecular symmetry and the two nitrogens are involved in the complexation. From the spectroscopic data it is found that the general pattern consists of infinite chains of alternated pyrazine and oxalic acid molecules built by OH ... N hydrogen bonds with R(OH .. N) = 2.65 Angstrom. For deuterated and hemi-hydrated derivatives, this hydrogen bond is weaker.
引用
收藏
页码:131 / 137
页数:7
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