Perfluoralkyl silver(III) compounds

Ag(CF3)(3).CH3CN is formed in numerous reactions of M[Ag(CF3)(4)] with acid ic compounds. It is isolated as a colourless oil from the reaction of Li[Ag (CF3)(4)] with ICl. Ag(CF3)(3).CH3CN reacts with halides to form the isolab le tris(trifluoromethyl)chloro and bromo argentates(III) [Ag(CF3)(3)X](-); the comparable iodo argentate(III) is unstable. The reaction of Ag(CF3)(3). CH3CN with Cd(C2F5)(2) complexes yields the mixed perfluoroalkyl argentate( III) [Ag(CF3)(3)C2F5](-) Oxidation of trifluoromethylsilver(I) compounds wi th tetraethyl thiuram disulfide (edtc)(2) leads to the neutral silver(III) compound (CF3)(2)Ag(edtc). The redox potentials of [PNP][Ag(CF3)(4)] [PNP = bis(triphenylphosphinanylidene)immonium] and (CF3)(2)Ag(edtc) have been me asured.