RATE CONSTANTS FOR THE REACTION OF CF3O RADICALS WITH HYDROCARBONS AT298-K

Rate constant ratios of the reactions of CF3O radicals with a number o f hydrocarbons have been determined at 298 +/- 2 K and atmospheric pre ssure using a relative rate method. Using a previously determined valu e k(CF30 + C2H6) = 1.2 x 10(-12) cm3 molecule-1 s-1 these rate constan t ratios provide estimates of the rate constants: k(CF3O + CH4) = (1.2 +/- 0.1) x 10(-14), k(CF3O + c-C3H6) = (3.6 +/- 0.2) x 10(-13), k(CF3 O + C3H8) = (4.7 +/- 0.7) x 10(-12), k(CF3O + (CH3)3CH) = (7.2 +/- 0.5 ) x 10(-12), k(CF3O + C2H4) = (3.0 +/- 0.1) x 10(-11) and k(CF3O + C6H 6) = (3.6 +/- 0.1) x 10(-11) cm3 molecule-1 s-1. The importance of the reactions of CF3O radicals with hydrocarbons under atmospheric condit ions is discussed.