Spectroscopic studies of the "free" OH stretching bands in liquid alcohols

被引：61
|
作者：
Palombo, F [1 ]
Paolantoni, M [1 ]
Sassi, P [1 ]
Morresi, A [1 ]
Cataliotti, RS [1 ]
机构：
[1] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2006年 / 125卷 / 2-3期
关键词：
free OH stretching bands; liquid alcohols; Raman spectra; rotational isomers;
D O I：
10.1016/j.molliq.2005.11.006
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：
A detailed investigation of the Raman "free" OH stretching band (3600-3650 cm(-1)) of liquid alcohols has been performed. Raman spectra of pure liquids 1-octanol, 2-octanol and tort-butanol have been analyzed as a function of temperature. Relevant spectral features have been consistently explained taking into account the concomitant effect of both rotational isomerism and hydrogen bonding. Important indications on the alcoholic liquid structure have been obtained following spectral modifications induced by the apolar 2,2-dimethylbutane solvent on the liquid tert-butanol. Further, the Raman "free" OH stretching band has been employed to explore structural properties of the tert-butanol/water system in the alcohol-rich region. The deduced hydration mechanism initially involves interaction of water molecules with test-butanol monomers. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：139 / 146
页数：8
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