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An FTIR study of the mechanism for the reaction HO + CH 3 SCH 3
Author(s) -
Niki H.,
Maker P. D.,
Savage C. M.,
Breitenbach L. P.
Publication year - 1983
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550150706
Subject(s) - chemistry , photodissociation , radical , fourier transform infrared spectroscopy , reaction mechanism , diluent , torr , infrared , sulfur , reaction intermediate , photochemistry , analytical chemistry (journal) , nuclear chemistry , organic chemistry , catalysis , physics , thermodynamics , quantum mechanics , optics
Product studies were made using the Fourier transform infrared method in the uv (300–400‐nm) photolysis of mixtures containing CH 3 SCH 3 , C 2 H 5 ONO, and NO in ppm concentrations in 700 torr of O 2 –N 2 diluent. Methyl thionitrite, CH 3 SNO, arising from the reaction CH 3 S + NO, was detected as an intermediate product. In addition, the yields of the major sulfur‐containing products SO 2 and CH 3 SO 3 H coincided with those of the oxidation of the CH 3 S radicals generated directly by the photodissociation of CH 3 SNO. The formation of CH 3 S in the HO‐initiated oxidation of CH 3 SCH 3 in the presence of NO suggests a reaction scheme involving the H‐abstraction reaction HO + CH 3 SCH 3 → CH 3 SCH 2 + H 2 O as the primary step.