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A Laser Photolysis Time-Resolved Fourier Transform Infrared Emission Study of OH(X,2Π,δ) Produced in the Reaction of Alkyl Radicals with O(3P)

Published

Author(s)

J Lindner, R A. Loomis, J J. Klaassen, S R. Leone

Abstract

The emission spectra of vibrationally excited hydroxyl radical products formed in the ractions of alkyl radicals with O(3P) atoms are detected using a laser potolysis/time-resolved Fourier transform infrared spectroscopy technique. For the reactiokKetone, respectively. The observed initial OH(V) product vibratonal state distbution for the C2H5+O(3P) reaction is 0.18+or-}0.03, 0.23+or-}0.04, 0.29+or-}0.05, 0.23+or-}0.07 and 0.07+or-}0.04 for v=1 to 5. The population inversion is best explained by a direct abstraction mechanism for this radical-radical reaction. Vibrationally excited hydroxyl radicals are also observed in the O+ethyl, O+ethyl, O+n-propyl, and O+i-propyl reactions when using alkyl iodides as precursors of the alkyl radicals, although quantitative detail is not obtained.
Citation
Journal of Chemical Physics
Volume
108
Issue
No. 5

Keywords

FTIR, hydroxyl, radicals, reaction mechanism

Citation

Lindner, J. , Loomis, R. , Klaassen, J. and Leone, S. (1998), A Laser Photolysis Time-Resolved Fourier Transform Infrared Emission Study of OH(X,<sub>2</sub>&#928;,&#948;) Produced in the Reaction of Alkyl Radicals with O(<sup>3</sup>P), Journal of Chemical Physics (Accessed July 18, 2024)

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Created January 31, 1998, Updated October 12, 2021