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ANALYSIS OF THE $\nu_2$ BAND OF THE FCO$_2$ RADICAL: PRELIMINARY RESULTS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/38129

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Title: ANALYSIS OF THE $\nu_2$ BAND OF THE FCO$_2$ RADICAL: PRELIMINARY RESULTS
Creators: Perrin, A.; Strizik, M.; Beckers, H.; Willner, H.; Zelinger, Z.; Pracna, P.; Nevrly, V.; Grigorova, E.
Issue Date: 2009
Abstract: 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 $\nu_2$ $A$-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.
URI: http://hdl.handle.net/1811/38129
Other Identifiers: 2009-TI-04
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