Free-radical reactions of several fluoroalkane-and chlorofluoroalkanesulfenyl chlorides with toluene. cyclohexane, and butane have been studied. The organic products obtained from these reactions include thiols, disulfides, sulfides, and chlorohydrocarbons. The relative yields of these products depend upon the structure of both the sulfenyl chloride and the hydrocarbon. Steric arguments are proposed to account for the results.