A molecular dynamics quantum Kramers study of proton transfer in solution

Dimitri Antoniou, Steven D. Schwartz

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45 Scopus citations


We present a quantum study of a proton transfer reaction AH-B⇌A--H+B in liquid methyl chloride, where the AH-B complex corresponds to phenol-amine. We use the same intramolecular potentials that were used in two earlier studies of this system [H. Azzouzz and D. Borgis, J. Chem. Phys. 98, 7361 (1993); S. Hammes-Schiffer and J. C. Tully, J. Chem. Phys. 101, 4657 (1994).] The former study employed a Landau-Zener approach and a molecular dynamics centroid method, while the latter a surface-hopping method. These studies obtained results that differ by an order of magnitude. In the present work, we first performed a molecular dynamics simulation to obtain the spectral density, which was then used as an input to the method we have developed for the study of the quantum Kramers problem [S. D. Schwartz, J. Chem. Phys. 105, 6871 (1996)]. Thus, in this work both the reaction coordinate and the bath are treated quantum mechanically.

Original languageEnglish (US)
Pages (from-to)465-472
Number of pages8
JournalJournal of Chemical Physics
Issue number1
StatePublished - 1999

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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