Electrical conductivity, ion-molecular and interionic interactions in solutions of some tetraalkylammonium salts in acetonitrile: the influence of the ion and temperature

Abstract

Ion association constants are discussed in terms of competition between Coulomb and non-Coulomb forces in terms of short-range square-mound potential. An increase in the ion association constants in the sequence Bu 4 NBF 4 <Et 4 NBF 4 <Bu 4 NBr<Et 4 NBr was explained by the increase in the contribution of short-range ionmolecular interactions to the interionic attraction in addition to the electrostatic component. An increase in temperature enhances the ionic association due to both the electrostatic and short-range components.