Kinetics and mechanism of the CF3+NO2 reaction at T=298 K

The rate constant for the CF3 + NO2 reaction (k(2)) was measured at room temperature in the range of total pressures 300-600 torr The measurements were performed using the ruby-laser-induced pulsed photodissociation of CF3NO in the presence of NO and NO2 in combination with time-resolved detection of the absorption of He-Ne laser radiation by CF3NO. The use of the CF3 + NO reaction as a reference gives k(2) = (3.2 +/- 0.7) x 10-(11) cm(3)/s. Analysis of the end products of the CF3 + NO2 reaction shows that the contribution of the association reaction channel, which leads to the formation of CF3NO2, is rather significant (about 30% total yield). A reaction mechanism is suggested to account for the products observed. (C) 1997 John Wiley & Sons, Inc.