Abstract The competitive substitution of the anion (A−) in contact ion pairs of the type [Oct 3 NH+] B (C 6 F 5) 4− by unsaturated hydrocarbons (L) in accordance with the equilibrium Oct 3 NH+⋅⋅⋅ A−+ nL⇄[Oct 3 NH+⋅⋅⋅ L n] A− has been studied in CCl 4. On the basis of equilibrium constants, K, and shifts of νNH to low frequency, it has been established that complexed Oct 3 NH+⋅⋅⋅ L n cations with n= 1 and 2 are formed and have unidentate ...
