Diarylseleniumbis(Trifluoroacetates) and Chloro-(Trifluoro-acetates): Preparation and Characterization

Abstract Some new p-substituted diarylseleniumbis(trifluoroacetates), (RC6H4)2Se(CF3COO)2 where R = p-C2H5O, p-CH3O, p-Br, p-Cl and diarylseleniumchloro(trifluoroacetates), (RC6H4)2SeCl(CF3COO) where R = H, p-C2H5O, p-CH3O, p-CH3, p-Br or p-Cl have been prepared by the metathetical reaction between the respective selenium dichloride and silver trifluoroacetate. The compounds (RC6H4)2Se(CF3COO)2 are also obtained quantitatively by the reaction between the corresponding diarylselenoxide and tri-fluoroacetic anhydride. These compounds have been characterized by analytical data, X-ray powder diffraction, infra-red, 1H and 19F NMR and mass spectral studies.