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The rate constants for the reaction of the hydroxyl radical with methyl, n ‐propyl, and n ‐butyl nitrites
Author(s) -
Baulch Donald L.,
Campbell Ian M.,
Saunders Sandra M.
Publication year - 1985
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.550170402
Subject(s) - chemistry , radical , reaction rate constant , kinetics , nitrite , medicinal chemistry , hydroxyl radical , analytical chemistry (journal) , organic chemistry , nitrate , physics , quantum mechanics
The kinetics of the reaction of OH radicals with methyl, n ‐propyl, and n ‐butyl nitrite\documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm OH + RONO} \to {\rm products} $$\end{document}have been studied in a discharge flow system under pseudo first‐order conditions. The OH radicals were generated by the reaction of H atoms with NO 2 and the concentration of OH; monitored by resonance fluorescence, was followed as a function of time in an excess of each nitrite. Values of k (CH 3 ONO) = (0.6 ± 0.09) × 10 9 dm 3 mol −1 s −1 k ( n – C 3 H 7 ONO) = (1.39 ± 0.20) × 10 9 dm 3 mol −1 s −1 , and k ( n – C 4 H 9 ONO) = (2.89 ± 0.43) × 10 9 dm 3 mol −1 s −1 at 295 K were obtained. These results agree with previous relative rate measurements from this laboratory but the value for k (CH 3 ONO) is a factor of 7 greater than the value obtained by relative rate measurements elsewhere using a different OH source.