High-Resolution FTIR Spectrum of Vinyl Fluoride: Rovibrational Analysis of the Torsion Mode at 712 cm−1

✍ Scribed by A. Gambi; A. Delorenzi; S. Giorgianni; P. Stoppa

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 379 KB
• Volume: 171
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1136

✦ Synopsis

The high-resolution infrared spectra of vinyl fluoride have been recorded using a Fourier transform spectrometer with a resolution of (0.0016 \mathrm{~cm}^{-1}). The rovibrational structure of the (\nu_{12}) fundamental (torsion mode) at (712.3 \mathrm{~cm}^{-1}), which gives rise to a (c)-type band, was analyzed in detail employing modern methods of computations and graphical aids. A comprehensive set of molecular constants for the first excited vibrational energy level of this band was obtained from the overall rovibrational assignment of almost 2500 transitions covering (J) and (K_{a}) values up to 40 and 16 , respectively, in the region (640-770 \mathrm{~cm}^{-1}). The rotational and centrifugal distortion parameters obtained compare reasonably well with those of the ground state, thus confirming that the (\nu_{12}) fundamental is essentially unperturbed.

co) 1995 Academic Press. Inc.