Kinetics of the reaction of hexachlorocyclotriphosphazene with 2,2,2-trifluoroethanol by phase-transfer catalysis

Abstract

The kinetics of the series substitution reaction between hexachlorocyclotriphosphazene and 2,2,2-trifluroethanol by tetrabutylammonium bromide as a phase-transfer catalyst in a two-phase organic solvent/alkaline solution was investigated. The kinetic data of this reaction gave a good fit to a second-order equation up to 90–100% of the complete reaction. The intrinsic reaction rate constants of the series substitution reaction in the organic phase were determined. The corresponding activation,. energy and activation entropy of the series substitution reaction were also obtained. The electronic density effect and the steric effect were both used to explain the relative reactivity of the six substituted reactions. The information would be valuable for an initial analysis of related reactions.