New, unexpected, and dominant mechanisms in the hydrogen exchange reaction

Stuart J. Greaves, Daniel Murdock, Eckart Wrede, Stuart C. Althorpe

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


A quasiclassical trajectory study of the state specific H+D-2(nu=0, j=0)-> HD(upsilon'=0, j'=0)+D reaction at a collision energy of 1.85 eV (total energy of 2.04 eV) found that the scattering is governed by two unexpected and dominant new mechanisms, and not by direct recoil as is generally assumed. The new mechanisms involve strong interaction with the sloping potential around the conical intersection, an area of the potential energy surface not previously considered to have much effect upon reactive scattering. Initial investigations indicate that more than 50% of reactive scattering could be the result of these new mechanisms at this collision energy. Features in the corresponding quantum mechanical results can be attributed to these new (classical) reaction mechanisms. (c) 2008 American Institute of Physics.

Original languageEnglish
Article number164306
Pages (from-to)-
Number of pages10
JournalThe Journal of Chemical Physics
Issue number16
Publication statusPublished - 23 Apr 2008


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