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

• Published in: Chemical physics letters 1990-05, Vol.168 (3), p.319-323
• Main Authors: Nielsen, Ole J., Jørgensen, Ole, Donlon, Michael, Sidebottom, Howard W., O'Farrell, Denis J., Treacy, Jack
• Format: Article
• Language: English
• Subjects: Chemistry; Exact sciences and technology; Free radicals chemistry; Organic chemistry; Reactivity and mechanisms
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/0009-2614(90)85618-M

Rate constants for the reactions of OH radicals with CH 2=CHNO 2, CH 2=CH-CH 2NO 2 and c-C 6H 9NO 2 have been determined at 298 ± 2 K and a total pressure of 1 atm. Rate data for the reaction of OH radicals with CH 2=CH 2, CH 2=CH-CH 3 and c-C 6H 10 were also obtained for comparison purposes. The OH rate data for all the compounds except c-C 6H 9NO 2 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-C 6H 9NO 2 reaction was derived using a conventional photolytic relative-rate method. The results are discussed in terms of structure-reactivity relationships.