Long path ftir spectroscopic study of the reactions of CF 3 O radicals with ethane and propane

A long path FTIR‐based product study was carried out by the visible (λ > 400 nm) photolysis of mixtures containing CF 3 NO, NO and ethane or propane (in mtorr range) in 700 torr of synthetic air at 297 ± 2 K. Kinetic and spectroscopic evidence has been obtained for the reaction (1), CF 3 O + RH → CF 3 OH + R (RH = C 2 H 6 or C 3 H 8 ). Using the reaction (2), CF 3 O + NO → CF 2 O + FNO as the reference reaction, values for the relative rate constants k 2 /k 1 were determined to be 50 ± 15(σ) and 20 ± 5(σ) for C 2 H 6 and C 3 H 8 , respectively. These results suggest that the hydrocarbon reactions may provide a significant pathway for the tropospheric degradation of HFCs and HCFCs containing a CF 3 group.