High-Resolution Infrared Spectra of Formyl Fluoride, HFCO

✍ Scribed by Y.J. Xu; J.W.C. Johns; A.R.W. Mckellar

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 539 KB
• Volume: 168
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1994.1267

✦ Synopsis

Five fundamental infrared bands of HFCO have been studied at high resolution for the first time: (v_{5}\left(\sim 663 \mathrm{~cm}^{-1}\right), v_{6}\left(\sim 1011 \mathrm{~cm}^{-1}\right), v_{4}\left(\sim 1065 \mathrm{~cm}^{-1}\right), v_{3}\left(\sim 1342 \mathrm{~cm}^{-1}\right)), and (v_{1}(\sim 2981) (\mathrm{cm}^{-1}) ). A Bomem Fourier transform spectrometer and an adjustable long-path cell were used. The effects of the strong (a) - and (b)-type Coriolis interactions between (v_{6}) and (v_{4}) were analyzed in detail, as was a weaker but still significant interaction between (\nu_{3}) and (2 \nu_{5}). On the other hand, perturbations noted in the (\nu_{1}) band were not analyzed in detail because of the large number of possible interacting vibrational states in the (3000-\mathrm{cm}^{-1}) region. Thirteen of the 14 known farinfrared laser transitions of HFCO, resulting from optical pumping of (v_{4}) and (v_{6}) by (\mathrm{CO}_{2}) lasers, were assigned in detail on the basis of the present analysis. 1994 Academic Press, Inc.