Choice of the reaction coordinate in electron-transfer reactions in solution

Victor Pérez, Angels González-Lafont, José M. Lluch, Juan Bertrán

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Abstract

The electrochemical reduction of methyl chloride in water to give methyl radical and chloride anion has been studied by the Monte Carlo method. The carbon-chlorine distance (dC-Cl) has been chosen to define the reaction coordinate, and a standard statistical perturbation theory has been used to obtain the Helmholtz energy change between the dividing surfaces defined by each particular value of dC-Cl. The corresponding transition state, in the sense of the variational transition-state theory, has been located and analysed. The results have been compared with those obtained as a function of the reaction coordinate ΔE in a previous work, defined as the difference between the diabatic energy hypersurfaces for each configuration of the system. We conclude that the non-geometrical parameter, ΔE, is the best choice for the reaction coordinate.
Original languageEnglish
Pages (from-to)1451-1455
JournalJournal of the Chemical Society, Faraday Transactions
Volume91
Issue number10
DOIs
Publication statusPublished - 1 Jan 1995

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    Pérez, V., González-Lafont, A., Lluch, J. M., & Bertrán, J. (1995). Choice of the reaction coordinate in electron-transfer reactions in solution. Journal of the Chemical Society, Faraday Transactions, 91(10), 1451-1455. https://doi.org/10.1039/FT9959101451