Reaction of organylxenonium(II) salts, [RXe][Y], with organyl iodides, R'I, in anhydrous HF: scope and limitation of a new synthetic approach to iodonium salts, [RR'I][Y

Perfluoroalkynylxenonium salts, RXe]BF(4)] (R = CF(3)C≡C, (CF(3))(2)CFC≡C), reacted with organyl iodides, R'I (R' = 3-FC(6)H(4), C(6)F(5), CF(2)═CF, CF(3)CH(2); no reaction with R' = CF(3)CF(2)CF(2)) in anhydrous HF to yield the corresponding asymmetric polyfluorinated iodonium salts, RR'I]Y]. The action of the arylxenonium salt, C(6)F(5)Xe]BF(4)], and the cycloalkenylxenonium salt, cyclo-1,4-C(6)F(7)Xe]AsF(6)], on 4-FC(6)H(4)I gave C(6)F(5)(4-FC(6)H(4))I]BF(4)] and cyclo-1,4-C(6)F(7)(4-FC(6)H(4))I]AsF(6)], respectively, besides the symmetric iodonium salt, (4-FC(6)H(4))(2)I]Y]. But the aryl-, as well as the cycloalkenylxenonium salt, did not react with C(6)F(5)I, CF(2)═CFI, and CF(3)CH(2)I.