Diode Laser Jet Spectroscopy of Hexafluorobenzene in the 10-μM Region

✍ Scribed by P.B. Davies; G.M. Hansford; T.C. Killian

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 799 KB
• Volume: 163
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1994.1014

✦ Synopsis

The absorption spectrum of hexafluorobenzene (\left(\mathrm{C}{6} \mathrm{~F}{6}\right)) around (10 \mu \mathrm{m}) has been measured in a pulsed supersonic jet using diode lasers. In the jet spectra the most intense room temperature features at 1000 and (1022 \mathrm{~cm}^{-1}) are rotationally resolved. They arise from two perpendicular bands, one of which ( (1022 \mathrm{~cm}^{-1}) ) is predominantly the (v_{13} \mathrm{C}-\mathrm{F}) stretching fundamental, while the other is a combination band of the same (e_{i 4}) symmetry in Fermi resonance with it. The upper state of the (1022 \mathrm{~cm}^{-1}) band is also perturbed and this perturbation has been analyzed in terms of a local (R_{z})-Coriolis interaction. Two other weak bands at 1002 and (1012 \mathrm{~cm}^{-1}) have also been observed. A set of effective parameters for these bands have been derived. The origins of the main bands are (999.28729(6)) and (1022.28442(6) \mathrm{cm}^{-1}). co 1994 Academic Press. Inc.