Gas-phase photodissociation of CF3C(O)Cl between 193 and 280 nm

Product yields were measured in the 296 K photolysis of CF3 C(O)Cl at 193, 248, 254, and 280 nm. Br2 was used as a radical scavenger to convert the primary CF3 and CF3 CO radical photofragments into stable bromides, CF3 Br and CF3 C(O)Br, which were quantified along with CO and CF2 O using infrared absorption. The stabilized CF3 CO radical yield increased with increasing photolysis wavelength from <0.007 at 193 nm to 0.95+0.05

−0.10 at 280 nm. An upper-limit for the ClCO radical yield was estimated to be <0.004 at all wavelengths. The CF3 Cl quantum yield was determined to be <0.001 at all wavelengths.