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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Reactions of methyl radicals. V. Hydrogen abstraction from hydrogen sulfide

H Arican and NL Arthur

Australian Journal of Chemistry 36(11) 2195 - 2202
Published: 1983

Abstract

Hydrogen abstraction from H2S by CH3 radicals, produced by the photolysis of azomethane, has been studied in the temperature range 334-432 K. The rate constant, based on the value 1013.34 cm3 mol-1 s-1 for the recombination of CH3 radicals, is given by

log k4 = (11.00 ± 0.01) - (8760 ± 80)/19.145T

where k4 is in cm3 mol-1 s-1 and E is in J mol-1.

The previous data reported for this reaction are discussed and best values for its Arrhenius parameters are recommended. The results indicate that CH3 radicals react faster than CF3 radicals with H2S; this confirms the importance of polar effects in the hydrogen abstraction reactions of CF3 radicals.

https://doi.org/10.1071/CH9832195

© CSIRO 1983

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