Abstract
To analyze the F + CD4 gas-phase abstraction reaction, an exhaustive state-to-state dynamics study was performed. Quasi-classical trajectory (QCT) calculations, including corrections to avoid zero-point energy leakage along the trajectories, were used on an analytical potential energy surface (PES-2006) recently developed by our group for collision energies in the range 0.3-6.0 kcal mol-1. While the CD3 coproduct appears vibrationally and rotationally cold, in agreement with experiment, most of the available energy appears as FD(nu') product vibrational energy, peaking at nu' = 3, one unit colder than experiment. The excitation function reproduces experiment, with the maximum contribution from the most populated FD(nu' = 3) level. The state-specific scattering distributions at different collision energies also reproduce the experimental behavior, with a clear propensity toward forward scattering, this tendency increasing with the energy. These dynamics results show the capacity of the PES-2006 surface to correctly describe the title reaction.
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