A High-Resolution Analysis of the ν3and ν9Absorption Bands of Difluoromethane

High-resolution (up to 0.0016 cm−1unapodized) room temperature and collision-cooled (at ∼100 K) mid-infrared (1000–1300 cm−1, 7.7–10 μm) absorption measurements of the ν3and ν9vibrational bands of difluoromethane (CH2F2, HFC-32) vapor were made with a Fourier transform spectrometer. A ro–vibrational...

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Bibliographic Details
Published inJournal of molecular spectroscopy Vol. 193; no. 1; pp. 166 - 173
Main Authors Smith, K.M., Duxbury, G., Newnham, D.A., Ballard, J.
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.01.1999
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Summary:High-resolution (up to 0.0016 cm−1unapodized) room temperature and collision-cooled (at ∼100 K) mid-infrared (1000–1300 cm−1, 7.7–10 μm) absorption measurements of the ν3and ν9vibrational bands of difluoromethane (CH2F2, HFC-32) vapor were made with a Fourier transform spectrometer. A ro–vibrational analysis of over 900 infrared transitions has yielded quartic rotational constants, and theC-type Coriolis coupling ξc39= 0.28802(11) cm−1. The results are compared with a previous analysis [J. Matuszeski and M. Marshall, Spectrochim. Acta. A 52, 1069–1077 (1996)] of a jet-cooled spectrum.
ISSN:0022-2852
1096-083X
DOI:10.1006/jmsp.1998.7734