Ring-polymer molecular dynamical calculations for the F + HCl → HF + Cl reaction on the ground 12A′ potential energy surface

2016 ◽  
Vol 18 (47) ◽  
pp. 32031-32041 ◽  
Author(s):  
Mengna Bai ◽  
Dandan Lu ◽  
Yongle Li ◽  
Jun Li
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Energy Surface ◽  
Rate Coefficients ◽  
Ring Polymer

RPMD rate coefficients are consistent with exact QM calculations, indicating that a reliable potential energy surface is desirable to reproduce experiment.

An accurate potential energy surface and ring polymer molecular dynamics study of the Cl + CH4 → HCl + CH3 reaction

2020 ◽  
Vol 22 (1) ◽  
pp. 344-353 ◽  
Author(s):  
Yang Liu ◽  
Jun Li
Keyword(s):  
Molecular Dynamics ◽  
Potential Energy ◽  
Potential Energy Surface ◽  
Energy Surface ◽  
Entrance Channel ◽  
Rate Coefficients ◽  
Spin Orbit ◽  
Ring Polymer ◽  
Ring Polymer Molecular Dynamics

Thermal rate coefficients for the Cl + CH4/CD4 reactions were studied on a new full-dimensional accurate potential energy surface with the spin–orbit corrections considered in the entrance channel.

Rotational de-excitations of C3H+ (1Σ+) by collision with He: new ab initio potential energy surface and scattering calculations

2020 ◽  
Vol 494 (4) ◽  
pp. 5675-5681 ◽  
Author(s):  
Sanchit Chhabra ◽  
T J Dhilip Kumar
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Cross Sections ◽  
Energy Surface ◽  
Molecular Ions ◽  
Basis Set ◽  
Rate Coefficients ◽  
Close Coupling ◽  
Collisional Rate Coefficients

ABSTRACT Molecular ions play an important role in the astrochemistry of interstellar and circumstellar media. C3H+ has been identified in the interstellar medium recently. A new potential energy surface of the C3H+–He van der Waals complex is computed using the ab initio explicitly correlated coupled cluster with the single, double and perturbative triple excitation [CCSD(T)-F12] method and the augmented correlation consistent polarized valence triple zeta (aug-cc-pVTZ) basis set. The potential presents a well of 174.6 cm−1 in linear geometry towards the H end. Calculations of pure rotational excitation cross-sections of C3H+ by He are carried out using the exact quantum mechanical close-coupling approach. Cross-sections for transitions among the rotational levels of C3H+ are computed for energies up to 600 cm−1. The cross-sections are used to obtain the collisional rate coefficients for temperatures T ≤ 100 K. Along with laboratory experiments, the results obtained in this work may be very useful for astrophysical applications to understand hydrocarbon chemistry.

Dynamics and kinetics of the Si(1D) + H2/D2 reactions on a new global ab initio potential energy surface

2021 ◽  
Vol 23 (10) ◽  
pp. 6141-6153
Author(s):  
Jianwei Cao ◽  
Yanan Wu ◽  
Haitao Ma ◽  
Zhitao Shen ◽  
Wensheng Bian
Keyword(s):  
Molecular Dynamics ◽  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Quantum Dynamics ◽  
Energy Surface ◽  
Molecular Dynamics Calculations ◽  
Ring Polymer ◽  
Ring Polymer Molecular Dynamics ◽  
Kinetics Of

Quantum dynamics and ring polymer molecular dynamics calculations reveal interesting dynamical and kinetic behaviors of an endothermic complex-forming reaction.

Dissection of the multichannel reaction of acetylene with atomic oxygen: from the global potential energy surface to rate coefficients and branching dynamics

2019 ◽  
Vol 21 (3) ◽  
pp. 1408-1416 ◽  
Author(s):  
Junxiang Zuo ◽  
Qixin Chen ◽  
Xixi Hu ◽  
Hua Guo ◽  
Daiqian Xie
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Atomic Oxygen ◽  
Energy Surface ◽  
Rate Coefficient ◽  
Branching Ratio ◽  
Classical Trajectory ◽  
Rate Coefficients ◽  
Product Branching

A global potential energy surface for the O(3P) + C2H2reaction is developed and the quasi-classical trajectory study on the potential energy surface reproduce the rate coefficient and product branching ratio.

scholarly journals Cold collisions of SH− with He: Potential energy surface and rate coefficients

2017 ◽  
Vol 147 (12) ◽  
pp. 124301 ◽  
Author(s):  
C. T. Bop ◽  
T. Trabelsi ◽  
K. Hammami ◽  
M. Mogren Al Mogren ◽  
F. Lique ◽  
...  
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Energy Surface ◽  
Rate Coefficients ◽  
Cold Collisions
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