摘要 : <abstract xmlns="http://www.wiley.com/namespaces/wiley" type="main"> <p> The potential energy surface (PES) for the H?+?CH ₄ system has been constructed with the recently developed XYG3 doubly hybrid functional, while t... 展开 <abstract xmlns="http://www.wiley.com/namespaces/wiley" type="main"> <p> The potential energy surface (PES) for the H?+?CH ₄ system has been constructed with the recently developed XYG3 doubly hybrid functional, while those with the standard B3LYP hybrid functional, and the M?ller–Plesset perturbation theory up to the second order (MP2) are also presented for comparison. Quantum dynamics studies demonstrated that satisfactory results on the reaction probabilities and the rate coefficients can be obtained on top of the XYG3‐PES, as compared to the results based on the highly accurate, yet expensive, CCSD(T)‐PES (Li et al., J. Chem. Phys. 2015, 142, 204302). Further investigation suggested that the XYG3 functional is useful in providing accurate rate coefficients for some larger systems involving H atom abstractions. ? 2017 Wiley Periodicals, Inc. </p> </abstract> 收起