C-H•••O hydrogen bonds in liquid cyclohexanone revealed by the vC=O splitting and the vC-H blue shift

被引:63
作者
Vaz, PD [1 ]
Ribeiro-Claro, PJA [1 ]
机构
[1] Univ Aveiro, Dept Quim, CICECO, P-3810193 Aveiro, Portugal
关键词
C-H center dot center dot center dot O hydrogen bond; blue shift; vibrational spectroscopy; ab initio calculations;
D O I
10.1002/jrs.1066
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
The presence of C-H... O hydrogen bonds in liquid cyclohexanone is concluded from a combined theoretical and vibrational spectroscopic study. The two bands present in the nuC=O region, clearly observed in the Raman spectrum, are assigned to 'free' and 'bonded' carbonyl groups from their temperature-dependent and solvent-dependent relative intensities. In addition, a band exhibiting the same intensity dependence in the nuC-H region is tentatively assigned to the blue-shifted nuC-H... (O) mode. Copyright (C) 2003 John Wiley Sons, Ltd.
引用
收藏
页码:863 / 867
页数:5
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