Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 651, Issue -, Pages 271-275Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0022-2860(03)00107-8
Keywords
low frequency Raman spectra; aqueous solutions; self aggregation
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The low-frequency Raman spectra of aqueous isopropanol mixtures at different proportions have been recorded. The influence of the isopropanol concentration on the position of the peak at (ν) over bar (2) = 190 cm(-1) associated to hydrogen bond between water molecules has been analyzed. The small shift to lower frequencies of the (ν) over bar (2) band indicates that isopropanol has a small effect of a structure breaker of hydrogen bond between water molecules. This result is correlated to the degree of self aggregation at a microscopic level of isopropanol. (C) 2003 Elsevier Science B.V. All rights reserved.
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