Rate constants and molecular recombination pathways of oxygen from quasi-classical trajectory simulations of the O3 system

2021 ◽  
pp. 111357
Author(s):  
Chaithanya Kondur ◽  
Kelly A. Stephani
Keyword(s):  
Rate Constants ◽  
Classical Trajectory ◽  
Trajectory Simulations

Theoretical investigation of the isomerization pathways of diazenes: torsion vs. inversion

2019 ◽  
Vol 21 (28) ◽  
pp. 15678-15685 ◽  
Author(s):  
Aarti Sindhu ◽  
Renuka Pradhan ◽  
Upakarasamy Lourderaj ◽  
Manikandan Paranjothy
Keyword(s):  
Ab Initio ◽  
Theoretical Investigation ◽  
Classical Trajectory ◽  
Centrifugal Barrier ◽  
Out Of Plane ◽  
Trajectory Simulations

Ab initio classical trajectory simulations show that diazenes isomerize via out-of-plane torsion and not in-plane inversion due to a centrifugal barrier.

COMPARATIVE STUDY OF REACTION RATE CONSTANTS FOR THE NH3 + H → NH2 + H2 REACTION WITH GLOBE DYNAMICS AND TRANSITION STATE THEORIES

2009 ◽  
Vol 08 (06) ◽  
pp. 1227-1233 ◽  
Author(s):  
JU LIPING ◽  
LU RUIFENG
Keyword(s):  
Transition State ◽  
Cross Sections ◽  
Rate Constants ◽  
Quantum Dynamics ◽  
Classical Trajectory ◽  
State Theory ◽  
Title Reaction ◽  
Reaction Rate Constants ◽  
Barrier Type ◽  
Good Agreement

The nine-dimension quasi-classical trajectory (QCT) calculations have been carried out for the title reaction with a global potential energy surface (PES) constructed by Corchado and Espinosa-García (J Chem Phys106:4013, 1997). The detailed dynamics calculations cover the specific collision energies falling in the range of 0.62–3.04 eV, which are sufficient to fit the calculated reactive cross-sections into a barrier-type excitation function and to obtain the thermal rate constants. The present QCT rate constants are in good agreement with the recent quantum dynamics (QD) results, both of which are much lower than that of the previous variational transition state theory (VTST).

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