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Conclusion
In the study of the CF3CF2C(O)F photolysisin the presence of c-C6H12, an increase in the photolysis rate of the reactant is observed. In our experimental conditions k1 was (1.4 ± 0.1)x 10-4 s-1.
When (FCO)2 is added, an excess of FCO produces a reduction of the CF3CF2C(O)F photolysis rate. The two former conclusions are compatible with a mechanism mediated by radicals.
The low quatum yield for the CF3CF2C(O)F disappearance and the results previously presented suggest that CF3CF2 and FCOradical recombination reaction is taking place and the calculated rate constant obtained for this recombination was (6.8 ± 0.8)x 10-12 cm3 molecule-1 s-1.
The value found is similar, within experimental error, to the rate constant obtained for CF3 and FCO radicals. This indicates that the length of the chain of the perfluoroalkyl radical does not affect the rate constant nor the mechanism.