Rate constants for the reactions of the hydroxyl radical with indane, indene and styrene

Values of second-order rate constants for the reactions [graphic omitted], have been measured using a discharge flow system operating at 295 K over the pressure range 65–1000 Pa. The OH concentration was monitored by resonance fluorescence and helium was used as the carrier gas. For indane the predominant mechanism is abstraction with a rate constant of (5.6 ± 0.8)× 109dm3 mol–1s–1. For both indene and styrene addition is the major reaction channel, giving rise to a pressure-dependent rate constant.