Flow tube/LIF measurements of the rate constants for the reactions with NO of CF3O and CF3O2 radicals

The rate constants for the reactions CF3O2 + NO → CF3O + NO2 (1) and CF3O + NO → products (2) have been measured at room temperature using a fast flow reactor associated with a monitoring of CF3O radicals by laser induced fluorescence (LIF); for the measurement of k1, CF3O radicals are prepared by the discharge flow technique in the reactive system F/CF3H/O2/NO; the average value is k1 = (1.76 ± 0.35) × 10−11 cm3 molecule−1 s−1. For reaction (2), CF3O radicals are prepared by another source: the thermolysis of the dimer CF3OOCF3 and the derived rate constant is k2 = (4.7 ± 0.9) × 10−11 cm3 molecule−1 s−1. Our results are in reasonable agreement with recent measurements using different techniques.