Overtone spectroscopy of methyl C-H stretch vibration in CH3CF2Cl and CH3CFCl2

X. Chen, A. Melchior, I. Bar, S. Rosenwaks

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Photoacoustic spectra of the second (3vCH), third (4vCH), and fourth (5vCH) overtones of the methyl C-H stretches in CH3CF2Cl and CH3CFCl2 were measured. The spectra are characterized by a multiple peak structure of partially resolved triplets and quartets with an anomalous linewidth decrease in the 4vCH region. The results are interpreted in terms of a simplified local mode model for C-H stretching vibrations, including also the stretch-deformation Fermi resonances. The model accounts for most spectral features and allows determination of the time scale for vibrational redistribution.

Original languageEnglish
Pages (from-to)4111-4117
Number of pages7
JournalJournal of Chemical Physics
Issue number9
StatePublished - 1 Mar 2000

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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