Analysis of the ν_2 Band of the FCO_2 Radical: Preliminary Results

Details Analysis of the ν_2 Band of the FCO_2 Radical: Preliminary Results Analysis of the ν_2 Band of the FCO_2 Radical: Preliminary Results

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confeti04p&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Physics

Atmospheric Species

Scientific paper

The unique fluoroformyloxyl radical (FCO_2) is assumed to participate in atmospheric
processes such as the degradation of hydrofluorocarbons that have been considered as chlorofluorocarbon substitutes. Despite this atmospheric interest,
the molecular and spectroscopic properties of FCO_2 have not yet sufficiently been explored. The high resolution FT IR gas phase spectrum of the
fluoroformyloxyl (FCO_2) radical was recorded in the 650 - 1500 cm^{-1} spectral range at the University of Wuppertal. Using this spectrum and the ground state parameters achieved recently we carried out the first high resolution study of the ν_2 A-type band (C-F stretching mode) centered at 970.209 cm^{-1}. The analysis was difficult because the band is congested. In addition the spin doublets are difficult to identify except for high K_a values. However, we could take advantage of the fact that only K_a=odd values are observable for symmetry reasons. The line position calculation accounts for the spin rotation doubling and for the Fermi-type resonances linking the 2^1 and 5^2 spin rotation energy levels.
[1] Kolesnikova, Varga, Beckers, Simeckova, Zelinger, Nova Striteska, Kania, Willner, and Urban, J. Chem Phys 128, 224 (2008)

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