Isokinetic relationships for nucleophilic substitution at the saturated carbon atom.Reactions with anions in the gas phase and various solvents

摘要

Isokinetic relationship (IKR) with the parameters T_(iso) = 6103 K and logk_(iso) = 10.402 is applicable to the rate constants for 165 reactions of nucleophilic substitution at the saturated carbon atom involving anionic nucleophiles in proton-donor and polar aprotic solvents and their mixtures.For analogous reactions in the gas phase proceeding via a specific mechanism,IKR is obtained with the parameters T_(iso)- 1505 K and logk_(iso)= 9.972,which is applicable to the reactions occurring under various pressures of an inert gas.