The oxidation power of the cyanocarbon TCNQ (tetracyanoquinodimethane) can be significantly increased to approximately E = +0.9 V vs. Cp 2 Fe by coordination of up to four equivalents of the strong fluorinated Lewis acid B(C 6 F 5 ) 3 . Thianthrene and tris(4bromophenyl)amine were oxidized to the corresponding radical cations. Dianionic [TCNQ•4 B(C 6 F 5 ) 3 ] 2ꟷ was formed upon reduction with two equivalents of ferrocene or decamethylcobaltocene.