Kinetics in phase-transfer catalysis: A theoretical study. Part 2. the method of initial rates

Raphael Bar, Jaime De La Zerda, Yoel Sasson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A theoretical study of a phase-transfer-catalysed irreversible S N2 reaction, RY + X- → RX + Y-, was undertaken in order to establish the necessary conditions for the application of the method of initial rates in phase-transfer catalysis. The system studied consists of a slow chemical reaction coupled to a fast anion exchange via an organic quaternary 'onium salt. An error in measuring the initial reaction rate was shown to be inherent in a system in which the released anion Y- is initially absent. This error is negligibly small when the selectivity extraction constant Kx/ysel ≥ 1 for equal reactant concentrations and when Kx/ysel ≥ 0.1 for a five-fold or more molar excess of concentration of the ionic reactant.

Original languageEnglish
Pages (from-to)1881-1884
Number of pages4
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number11
DOIs
StatePublished - 1984

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