Kinetics of thermal gas-phase decomposition of 2-bromopropene using static system

The gas phase elimination kinetics of 2-bromopropene was studied over the temperature range of 571-654 K and pressure range of 12-46 Torr using the seasoned static reaction system. Propyne was the only olefinic product formed and accounted for > 98% of the reaction. This product was formed by homogeneous, unimolecular pathways with high-pressure first-order rate constant k(infinity) given by the equation k(infinity) = 10(13.47 +/- 0.6) exp(-208.2 +/- 6.7(kJ mol-1)/RT). The error limits are 95% certainty limits. The observed Arrhenius parameters are consistent with the four centered activated complex. The presence of methyl group on cl-carbon lowers the activation energy by 41 kJ mol(-1). (c) 2006 Wiley Periodicals, Inc.