Photolysis of Dibromodifluoromethane at 265 nm

Abstract

The gas phase photolysis of CF2Br2 at 265 nm has been studied over a range of pressures and temperatures. The products are formed by combination reactions of the bromodifluoromethyl radicals and bromine atoms. Quantum yield measurements on the dimer CF2BrCF2Br suggest that the combination of bromodifluoromethyl radicals with bromine atoms is third order at the pressures studied. The quantum yield decreases with increasing pressure of CF2Br2, or CO2, added as diluent, which indicates that the primary process involves formation of an excited CF2Br2 molecule.