Quantum reaction dynamics of the C(1D) + H2(D2) → CH(D) + H(D) on a new potential energy surface

Abstract

The gas-phase reaction dynamics for the C((1)D) + H2(D2) → CH(D) + H(D) is investigated on a new ab initio potential energy surface (PES). The initial state-specified integral cross section and rate constant are obtained using the Chebyshev real wave packet method; the low-lying vibrational energy levels are also calculated on this new PES using Lanczos algorithm. The vibrational energy levels agree well with the experimental data and are superior to Bussery-Honvault-Honvault-Launay [B. Bussery-Honvault, P. Honvault, and J.-M. Launay, J. Chem. Phys. 115, 10701 (2001)] surfaces' results. The reaction probabilities display oscillatory structure due to the numerous long-lived resonances supported by the deep potential well. The rate constants show nearly temperature independence at the range of 100 K-350 K.