Microwave spectroscopy of the ground, nu(18), 2 nu(18), and nu(11) vibrational states of CF3CFH2

Authors
Ilyushin, VV Alekseev, EA Dyubko, SF Baskakov, OI
Citation
Vv. Ilyushin et al., Microwave spectroscopy of the ground, nu(18), 2 nu(18), and nu(11) vibrational states of CF3CFH2, J MOL SPECT, 195(2), 1999, pp. 246-255
Citations number
6
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF MOLECULAR SPECTROSCOPY
ISSN journal
00222852 → ACNP
Volume
195
Issue
2
Year of publication
1999
Pages
246 - 255
Database
ISI
SICI code
0022-2852(199906)195:2<246:MSOTGN>2.0.ZU;2-I
Abstract
The rotational spectra of the ground, nu(18), 2 nu(18), and nu(11) vibratio nal states of CF3CFH2 have been investigated in the frequency range 48-116 GHz with an accuracy of measurement better than 10 kHz. Rotational and cent rifugal distortion parameters derived using an S-reduced Watson-type Hamilt onian have been improved for the ground and vis states. An interaction betw een 2 nu(18) and nu(11) vibrational states has been detected, and rotationa l, centrifugal distortion, and coupling parameters of these states have bee n determined for the first time. The wavenumber difference between the 2 nu (18) and nu(11) states was found to be 11.20996(54) cm(-1). (C) 1999 Academ ic Press.