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The reaction of C 2 F 5 radicals with H 2 S
Author(s) -
Bassett J. E.,
Whittle E.
Publication year - 1972
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.550040404
Subject(s) - radical , chemistry , arrhenius equation , reaction rate constant , photodissociation , activation energy , photochemistry , kinetics , organic chemistry , physics , quantum mechanics
The reaction of C 2 F 5 radicals with H 2 S\documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{*{20}c} {(2)} & {{\rm C}_{\rm 2} {\rm H}_{\rm 5} + {\rm H}_{\rm 2} {\rm S} \to {\rm C}_{\rm 2} {\rm F}_{\rm 5} {\rm H} + {\rm HS}} & {k_H } \\ \end{array}$$\end{document} was studied over the range 1°−123°C using C 2 F 5 radicals generated by photolysis of perfluoropropionic anhydride. The rate constant k H for reaction (2) is given by\documentclass{article}\pagestyle{empty}\begin{document}$$\log {\rm }k_H ({\rm cm}^{\rm 3} {\rm mole}^{ - 1} \sec ^{ - 1}) = (11.70 \pm 0.19) - (4260 \pm 290)/\theta$$\end{document} where θ = 2.303 RT /cal mole −1 . The relevance of this result to conflicting published data on the analogous reaction between CF 3 radicals and H 2 S is discussed. It is concluded that there is little difference in the Arrhenius parameters for reaction of CF 3 and C 2 F 5 radicals with H 2 S.