Perfluoroalkyl derivatives of sulphur. Part XIII. The reaction of polyfluoromonoiodoalkanes with diethyl disulphide and of pentafluoroiodobenzene with bis(trifluoromethyl) disulphide

Photochemical reactions of trifluoroiodomethane and of heptafluoro-1-iodopropane with diethyl disulphide gives comparable yields (ca. 40%) of the corresponding ethyl polyfluoroalkyl sulphides and 1H-polyfluoroalkanes and lower yields of 1,1,1-trifluoropropane or 1,1,1,2,2,3,3-heptafluoropentane. Pentafluorophenyl trifluoromethyl sulphide, pentafluorophenyl trifluoromethyl disulphide, and trifluoroiodomethane are formed in the photochemical reaction of pentafluoroiodobenzene with bis(trifluoromethyl) disulphide.