Photolysis of trifluoromethyl iodide in the presence of ethylene and 1,1-difluoroethylene

Abstract

The competitive addition of the CF₃· radical to ethylene and 1,1-difluoroethylene was studied between 0 and 100°; the following values for the Arrhenius parameters were obtained: log A₂/A₄= 0·44 ± 0·13; E₄–E₂= 2·00 ± 0·19 kcal./mole, for the reactions CF₃·+ CH₂= CH₂→ CF₃CH₂CH₂·(2), CF₃·+ CH₂= CF₂→ CF₃CH₂CF₂·(4) Trifluoromethyl iodide was photolysed in the presence of mercury to generate CF₃· radicals.