High-fidelity first principles nonadiabaticity: Diabatization, analytic representation of global diabatic potential energy matrices, and quantum dynamics

Y Guan, C **e, DR Yarkony, H Guo - Physical Chemistry Chemical …, 2021 - pubs.rsc.org
Nonadiabatic dynamics, which goes beyond the Born–Oppenheimer approximation, has
increasingly been shown to play an important role in chemical processes, particularly those …

High-dimensional ab initio potential energy surfaces for reaction dynamics calculations

JM Bowman, G Czako, B Fu - Physical Chemistry Chemical Physics, 2011 - pubs.rsc.org
There has been great progress in the development of potential energy surfaces (PESs) for
reaction dynamics that are fits to ab initio energies. The fitting techniques described here …

A detailed kinetic submechanism for OH∗ chemiluminescence in hydrogen combustion revisited. Part 2

AS Sharipov, BI Loukhovitski, AV Pelevkin… - Combustion and …, 2024 - Elsevier
In this series of two papers, we present a novel physically sound kinetic submechanism
aimed at modeling the formation and decay of chemiluminescent (electronically excited) …

Full-dimensional quantum stereodynamics of the non-adiabatic quenching of OH(A2Σ+) by H2

B Zhao, S Han, CL Malbon, U Manthe, DR Yarkony… - Nature …, 2021 - nature.com
Abstract The Born–Oppenheimer approximation, assuming separable nuclear and
electronic motion, is widely adopted for characterizing chemical reactions in a single …

Dynamical outcomes of quenching: Reflections on a conical intersection

JH Lehman, MI Lester - Annual Review of Physical Chemistry, 2014 - annualreviews.org
This review focuses on experimental studies of the dynamical outcomes following collisional
quenching of electronically excited OH A 2Σ+ radicals by molecular partners. The …

[HTML][HTML] Direct diabatization and analytic representation of coupled potential energy surfaces and couplings for the reactive quenching of the excited 2Σ+ state of OH …

Y Shu, J Kryven… - The Journal of …, 2019 - pubs.aip.org
We have employed extended multiconfiguration quasidegenerate perturbation theory,
fourfold-way diabatic molecular orbitals, and configurational uniformity to develop a global …

On the nonadiabatic collisional quenching of OH (A) by H 2: a four coupled quasi-diabatic state description

CL Malbon, B Zhao, H Guo, DR Yarkony - … Chemistry Chemical Physics, 2020 - pubs.rsc.org
A four-state diabatic potential energy matrix (DPEM), Hd, for the description of the
nonadiabatic quenching of OH (A2Σ+) by collisions with H2 is reported. The DPEM is …

[HTML][HTML] Direct production of OH radicals upon CH overtone activation of (CH3) 2COO Criegee intermediates

F Liu, JM Beames, MI Lester - The Journal of Chemical Physics, 2014 - pubs.aip.org
Ozonolysis of alkenes, a principle non-photolytic source of atmospheric OH radicals,
proceeds through unimolecular decay of energized carbonyl oxide intermediates, known as …

Quasiclassical trajectory study of the postquenching dynamics of OH AΣ2+ by H2/D2 on a global potential energy surface

B Fu, E Kamarchik, JM Bowman - The Journal of chemical physics, 2010 - pubs.aip.org
Quasiclassical trajectory study of the postquenching dynamics of OH AΣ2+ by H2/D2 on a global
potential energy surface | The Journal of Chemical Physics | AIP Publishing Skip to Main …

Semiclassical Trajectory Studies of Reactive and Nonreactive Scattering of OH(A 2Σ+) by H2 Based on an Improved Full‐Dimensional Ab Initio Diabatic Potential …

S Han, AGS de Oliveira‐Filho, Y Shu… - …, 2022 - Wiley Online Library
We present a new full‐dimensional diabatic potential energy matrix (DPEM) for
electronically nonadiabatic collisions of OH (A 2Σ+) with H2, and we calculate the …