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2 BAND OF THE FCO2 RADICAL: PRELIMINARY RESULTS.
A. PERRIN, Laboratoire Inter Universitaire des Systemes Atmosphériques, CNRS, Universités Paris 12 et 7, 61 Av du Général de Gaulle, 94010 Créteil Cedex France; M. STRIZÍK, VSB-Technical University of Ostrava, Faculty of Safety Engineering, Lumírova 13, CZ-70030, Ostrava 3 - Výskovice, Czech Republic, Institute of Thermomechanics, v.v.i., Academy of Sciences of the Czech Republic, Dolejskova 5, CZ-18200 Prague 8, Czech Republic; H. BECKERS, H. WILLNER, Inorg. Chemistry, University of Wuppertal, D-42119 Wuppertal, GERMANY; Z. ZELINGER, P. PRACNA, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, CZ-18223 Prague 8, Czech Republic; V. NEVRLÝ, E. GRIGOROVÁ, VSB-Technical University of Ostrava, Faculty of Safety Engineering, Lumírova 13, CZ-70030, Ostrava 3 - Výskovice, Czech Republic, Institute of Thermomechanics, v.v.i, Academy of Sciences of the Czech Republic, Dolejskova 5, CZ-18200 Prague 8, Czech Republic..
The unique fluoroformyloxyl radical (FCO2) 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 FCO2 have not yet sufficiently been explored. The high resolution FT IR gas phase spectrum of the fluoroformyloxyl (FCO2) 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
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 Ka values. However, we could take advantage of the fact that only Ka=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 21 and 52 spin rotation energy levels.