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Quasi-classical trajectory study of the dynamics of the Cl + CH4→ HCl + CH3 reaction
S J Greaves1, R A Rose, F Abou-Chahine
1School of Chemistry, University of Bristol, Bristol, UK. s.j.greaves@bris.ac.uk
Abstract:
We present an on-the-fly classical trajectory study of the Cl + CH(4)→ HCl + CH(3) reaction using a specific reaction parameter (SRP) AM1 Hamiltonian that was previously optimized for the Cl + ethane reaction [S. J. Greaves et al., J. Phys Chem A, 2008, 112, 9387]. The SRP-AM1 Hamiltonian is shown to be a good model for the potential energy surface of the title reaction. Calculated differential cross sections, obtained from trajectories propagated with the SRP-AM1 Hamiltonian compare favourably with experimental results for this system. Analysis of the vibrational modes of the methyl radical shows different scattering distributions for ground and vibrationally excited products.
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