Abstract

The quasi-classical trajectory calculations are carried out to investigate the isotopic substitution effect on title reactions based on the recently developed, accurate potential energy surface of the HCS(X2[Formula: see text]) (Song, Zhang, et al. Sci. Rep. 6, 37734 (2016)). The total integral cross sections (ICSs) and vibrational state resolved ICSs are obtained for C + SH(D, T) → H(D, T) + CS reactions. In addition, differential cross sections and two angle distribution functions P(θr), P([Formula: see text]) at different collision energies are investigated. It is found that the peaks of P(θr) and P([Formula: see text]) become lower with the reagent molecule SH turning into SD and ST.

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