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Pre‐resonance Raman effect on the OD stretching Raman spectra of methanolic LiX solutions (X = Cl, Br and I)
Author(s) -
Kanno Hitoshi,
Yamauchi Shigeru
Publication year - 1993
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250240703
Subject(s) - raman spectroscopy , chemistry , resonance (particle physics) , spectral line , analytical chemistry (journal) , nuclear magnetic resonance , organic chemistry , atomic physics , optics , physics , astronomy
Intensities of the OD stretching modes in the Raman spectra of LiX solutions (X = Cl, Br and I) in CH 3 OD were measured. It is shown that the intensities increase significantly with increasing halide concentration owing to a pre‐resonance Raman effect arising from charge‐transfer states of hydrogen bonds between halide ions and their solvated methanol molecules. The small dissociation of dissobed Lil molecules is the reason why no enhancement of the intensity is observed in the Raman OD stretching spectrum for a glassy methanolic LiI solution.