The hydrogen fluoride solvent system. Part I. Solutions of antimony pentafluoride and antimony tetrafluoride monofluorosulphate
Abstract
The electrical conductivity and 19F and 1H n.m.r. spectra of the hydrogen fluoride–antimony pentafluoride system are accounted for in terms of the reactions 2HF + SbF5 H2F++ SbF6–, and SbF6–+nSbF5→[Sbn+1 F5n+1]–. It is shown that the ion H2F+ has an abnormally high mobility and therefore probably conducts by a proton-transfer mechanism. SbF4SO3F undergoes solvolysis according to the equation SbF4SO3F + 3HF → H2F++ SbF6–+ HSO3F.