Kinetics of the reaction of Cl atoms with FC(O)O and FC(O) OCl

The kinetics of the Cl + FC(O) O + M → FC(O)OCl + M recombination reaction has been studied by using an ArF excimer laser flash photolysis technique over the 3–650 mbar pressure range of the bath gases He and SF6 at 295 K. The reaction was found to be close to the second-order regime at total pressures greater than about 100 mbar. The derived limiting high-pressure rate coefficient is (3.1 ± 0.3) × 10−11 cm3 molecule−1 s−1. For the Cl + FC(O)OCl → FC(O)O + Cl2 reaction a rate coefficient of (1.5 ± 0.2) × 10−11 cm3 molecule−1 s−1 was determined. An analysis of the results in terms of the simplified versions of the statistical adiabatic channel model has carried out.