A High-Resolution Analysis of the nu3 and nu9 Absorption Bands of Difluoromethane.
High-resolution (up to 0.0016 cm-1 unapodized) room temperature and collision-cooled (at approximately 100 K) mid-infrared (1000-1300 cm-1, 7.7-10 µm) absorption measurements of the nu3 and nu9 vibrational 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 the C-type Coriolis coupling xic39 = 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. Copyright 1999 Academic Press.
Smith
KM
Department of Physics and Applied Physics, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow, G4 0NG, United Kingdom
Duxbury
G
Newnham
DA
Ballard
J