Atmospheric Chemistry of CF3O Radicals: Reaction with CH4, CD4, CH3F, CF3H, (13)CO, C2H5F, C2D6, C2H6, CH3OH, i-C4H8, and C2H2

Article abstract of DOI:10.1021/j100010a034

A relative rate technique has been used to study the title reactions at 296 +/- 2 K.Using a reference rate constant of k(CF3O + CH4) = (2.2 +/- 0.2) x 1E-14 cm³ molecule^-1 s^-1, rate constants (in 700 Torr of air diluent) for the reactions of CF3O radicals with the following reactants were established; CD4, (5.1 +/- 1.6) x 1E-15; CH3F, (2.4 +/- 0.3) x 1E-14; CF3H, <6 x 1E-16; (13)CO, (7.2 +/- 0.7) x 1E-14; C2H5F, (3.2 +/- 0.5) x 1E-13; C2D6, (6.4 +/- 1.1) x 1E-13; C2H6, (1.4 +/- 0.3) x 1E-12; CH3OH, (2.5 +/- 0.4) x 1E-12; i-C4H8, (6.1 +/- 1.3) x 1E-12; C2H2, (1.7 +/- 0.3) x 1E-11 cm³ molecule^-1 s^-1.The rate of the reaction of CF3O radicals with (13)CO was observed to be dependent on the total pressure.In 100 Torr of total pressure of air diluent, k(CF3O + (13)CO) = (4.6 +/- 0.5) x 1E-14 cm³ molecule^-1 s^-1.The reaction of CF3O with (13)CO gives (13)CO2 in a yield of 96 +/- 8percent.Implications for the atmospheric chemistry of CF3O radicals are discussed.