An ab initio potential surface describing abstraction and exchange for H+CH4
J. Chem. Phys. 124, 021104 (2006); doi:10.1063/1.2162532
Published 11 January 2006
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We report an ab initio-based global potential energy surface for H+CH4 that describes the abstraction and exchange reactions. The PES, which is invariant with respect to any permutation of five H atoms, is a fit to 20 728 electronic energies calculated using the partially spin-restricted coupled-cluster method (RCCSD(T)) with a moderately large basis (aug-cc-pVTZ). A first set of quasiclassical trajectory calculations using this PES are reported for the H+CD4
HD+CD3 reaction at collision energies of 0.65 and 1.52 eV and are compared to experiment and recent direct dynamics calculations done with density functional theory.
©2006 American Institute of Physics
HD+CD3 reaction at collision energies of 0.65 and 1.52 eV and are compared to experiment and recent direct dynamics calculations done with density functional theory.
©2006 American Institute of Physics
| History: | Received 21 November 2005; accepted 7 December 2005; published 11 January 2006 |
| Permalink: |
http://link.aip.org/link/?JCPSA6/124/021104/1 |
KEYWORDS and PACS
hydrogen neutral atoms,
atom-molecule reactions,
isotope effects,
organic compounds,
chemical exchanges,
ab initio calculations,
potential energy surfaces,
reaction kinetics theory,
coupled cluster calculations
- 82.30.Hk
Chemical exchanges (substitution, atom transfer, abstraction, disproportionation, and group exchange) - 82.20.Kh
Potential energy surfaces for chemical reactions - 82.20.Ln
Semiclassical theory of reactions and/or energy transfer in chemical kinetics - 82.30.Cf
Atom and radical chemical reactions; chain reactions, molecule-molecule reactions - YEAR: 2006
RELATED DATABASES
PUBLICATION DATA
0021-9606 (print)
1089-7690 (online)
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