The rapid chloride exchange reaction between tri-(1-naphthyl)chlorosilane and [36Cl]chloride ion in acetone

Abstract

The kinetics of the reaction between tri-(1-naphthyl)chlorosilane and [³⁶Cl]chlorides have been investigated by means of a flow–quench technique in acetone at 25·0°. It is shown that the reaction is bimolecular and that the kinetically important chloride species is free chloride ion. The rate-depressing effect of inert salts is interpreted in terms of the suppression of the ionization of the chloride salt. Hydrogen chloride also slows the reaction; conductivity and kinetic evidence is presented to show that this is due to formation of the ion HCl₂^– in solution.