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Rate constants for the gas-phase reactions of OH radicals with nitroethene, 3-nitropropene and 1-nitrocyclohexene at 298 K and 1 atm

✍ Scribed by Ole J. Nielsen; Ole Jørgensen; Michael Donlon; Howard W. Sidebottom; Denis J. O'Farrell; Jack Treacy

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
395 KB
Volume
168
Category
Article
ISSN
0009-2614

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✦ Synopsis

Rate constants for the reactions of OH radicals with CH2-CHN02, CH2-CH-CH,NOZ and c-CaHsNOz have been determined at 298?2 K and a total pressure of 1 atm. Rate data for the reaction of OH radicals with CH2-CHZ, CH2=CH-CH3 and C-C&~ were also obtained for comparison purposes. The OH rate data for all the compounds except c-C6HPNOZ were obtained using the absolute technique of pulse radiolysis combined with kinetic UV spectroscopy. Water-argon mixtures were irradiated and the OH kinetics recorded by following the transient light absorption at 309 nm. The rate constant for the OH+c-C6H,N02 reaction was derived using a conventional photolytic relative-rate method. The results are discussed in terms of structure-reactivity relationships.

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