Kinetics of the simplest criegee intermediate CH2OO reacting with CF3CF=CF2

CF3CF=CF2 is a potential source of atmospheric trifluoroacetic acid (CF3C(O)OH). The kinetics of the reaction of the simplest Criegee intermediate (CH2OO) with CF3CF=CF2 was studied by using the OH laser-induced fluorescence method. At 10 torr, the rate co-efficients were measured to be (1.45±0.14)×10−13, (1.18±0.11)×10−13, (1.11±0.08)×10−13, and (1.04±0.08)×10−13 cm3·molecule−1·s−1 at 283, 298, 308 and 318 K, respectively. The activation energy of (−1.66±0.21) kcal/mol was derived from the Arrhenius equation. No obvious pressure dependence was observed.