The OH+D2 -> HOD+D angle-velocity distributions: quasi-classical trajectory calculations on the YZCL2 and WSLFH potential energy surfaces and comparison with experiments at ET=0.28 eV.

  1. Sierra, J.D. 1
  2. Martínez, R. 1
  3. Hernando, J. 2
  4. González, M. 3
  1. 1 Universidad de La Rioja

    Universidad de La Rioja

    Logroño, España

    GRID grid.119021.a

  2. 2 Universitat Autònoma de Barcelona

    Universitat Autònoma de Barcelona

    Barcelona, España

    GRID grid.7080.f

  3. 3 Universitat de Barcelona

    Universitat de Barcelona

    Barcelona, España

    GRID grid.5841.8

Physical Chemistry Chemical Physics

ISSN: 1463-9076

Year of publication: 2009

Volume: 11

Issue: 48

Pages: 11520-11527

Type: Article

Export: RIS
DOI: 10.1039/b915297k SCOPUS: 2-s2.0-71749119189 WoS: 000272271400020
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The angle-velocity distribution (HOD) of the OH + D2 reaction at a relative translational energy of 0.28 eV has been calculated using the quasi-classical trajectory (QCT) method on the two most recent potential energy surfaces available (YZCL2 and WSLFH PESs), widely extending a previous investigation of our group. Comparison with the high resolution experiments of Davis and co-workers (Science, 2000, 290, 958) shows that the structures (peaks) found in the relative translational energy distributions of products could not be satisfactorily reproduced in the calculations, probably due to the classical nature of the QCT method and the importance of quantum effects. The calculations, however, worked quite well for other properties. Overall, both surfaces led to similar results, although the YZCL2 surface is more accurate to describe the H3O PES, as derived from comparison with high level ab initio results. The differences observed in the QCT calculations were interpreted considering the somewhat larger anisotropy of the YZCL2 PES when compared with the WSLFH PES. © 2009 the Owner Societies.