Absolute rate constants for the reaction of O(3P) atoms with a series of olefins over the temperature range 298–439 °K

Absolute rate constants for the reaction of O(3P) atoms with ethylene, propylene, 1-butene, isobutene, cis-2-butene, and trans-2-butene have been determined over the temperature range 298–439 °K using a flash photolysis–NO2 chemiluminescence technique. The Arrhenius expressions obtained are: k2(ethylene) =9.23×10−12 e−(1475±200)/RT, k2(propylene) =1.05×10−11 e−(515±200)/RT, k2(1-butene) =1.39×10−11 e−(665±200)/RT, k2(isobutene) =1.76×10−11 e−(85±200)/RT, k2(cis-2-butene) =1.21×10−11 e(235±200)RT, and k2(trans-2-butene) =2.26×10−11 e(20±200)/RT cm3 molecule−1 sec−1. These data are in excellent agreement with a recent modulation–phase shift study.