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Vapour‐phase Raman spectra of benzoic acid
Author(s) -
Furić K.,
Colombo L.
Publication year - 1986
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.1250170106
Subject(s) - raman spectroscopy , benzoic acid , chemistry , spectral line , ring (chemistry) , phase (matter) , molecule , analytical chemistry (journal) , organic chemistry , optics , physics , astronomy
The medium‐resolution Raman spectrum of benzoic acid vapour has been recorded. Comparison of the high‐frequency spectrum with the internal spectra of substituted and similar molecules indicates that previous assignments of the spectra should be revised. Three possible explanations are proposed for the broad feature observed at very low frequencies. Two of them lead to the conclusion that there is a very low barrier for hindered rotation around the CC bond connecting the carboxylic group with the phenyl ring.