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SO(X 3Σ−) product energy disposal in the desulfurization reaction of thiirane with O(3P) atoms

✍ Scribed by K. Ravichandran; Yuchuan Gong; Fei Wu; Brad R. Weiner

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
493 KB
Volume
252
Category
Article
ISSN
0009-2614

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✦ Synopsis

The SO(X 3~-) product energy disposal in the desulfurization reaction of thiirane (C2H45) with O(3p) atom has been studied by probing its rovibrational state distributions via laser-induced fluorescence spectroscopy on the B 3E--X 3Etransition. The O(3p) atom was produced by 351 nm photolysis of NO 2. The nascent SO(X 3E-) product vibrational state distribution was found to be inverted with a maximum at v" = 1 and measurable population was detected up to v" = 8. The rotational state distributions of SO(X 3E-, v" = 1-5) produced within two gas kinetic collisions can be characterized by an average rotational temperature, T R = 1163 ___ 311 K. The observed SO(X 3E-) internal energy accounts for 16% of the total energy available to the products. No evidence for the production of other species, e.g. OH, was observed. The non-statistical energy distribution in SO(X 3E-) is consistent with an abstraction mechanism for the title reaction.

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