Chemical versatility of azide radical: journey from a transient species to synthetic accessibility in organic transformations

M Shee, NDP Singh - Chemical Society Reviews, 2022 - pubs.rsc.org
The generation of azide radical (N3˙) occurs from its precursors primarily via a single
electron transfer (SET) process or homolytic cleavage by chemical methods or advanced …

Global ab initio ground-state potential energy surface of N4

Y Paukku, KR Yang, Z Varga, DG Truhlar - The Journal of chemical …, 2013 - pubs.aip.org
We present a global ground-state potential energy surface for N 4 suitable for treating high-
energy vibrational-rotational energy transfer and collision-induced dissociation in N 2–N 2 …

[HTML][HTML] Potential energy surfaces for O+ O2 collisions

Z Varga, Y Paukku, DG Truhlar - The Journal of chemical physics, 2017 - pubs.aip.org
We present global potential energy surfaces for nine adiabatic electronic states of O 3,
namely, 1 1 A′, 2 1 A′, 1 1 A ″, 1 3 A′, 2 3 A′, 1 3 A ″, 1 5 A′, 2 5 A′, and 1 5 A …

Quantum and semiclassical studies of nonadiabatic electronic transitions between N (4 S) and N (2 D) by collisions with N 2

D Lu, BRL Galvão, AJC Varandas… - Physical Chemistry …, 2023 - pubs.rsc.org
The dynamics and kinetics of spin-forbidden transitions between N (2D) and N (4S) via
collisions with N2 molecules are investigated using a quantum wave packet (WP) method …

Extrapolation in quantum chemistry: Insights on energetics and reaction dynamics

AJC Varandas - Journal of Theoretical and Computational …, 2020 - World Scientific
Since there is no exact solution for problems in physics and chemistry, extrapolation
methods may assume a key role in quantitative quantum chemistry. Two topics where it …

Extrapolation of Hartree–Fock and multiconfiguration self-consistent-field energies to the complete basis set limit

FNN Pansini, AC Neto, AJC Varandas - Theoretical Chemistry Accounts, 2016 - Springer
It is shown that Hartree–Fock calculations using basis sets of the correlation consistent
family and arbitrary hierarchical numbers can be extrapolated to the complete basis set limit …

Theoretical re-investigation on the N–N bond breaking of N2O+ cations in the A2Σ+ and B2Π states at the CASPT2 level

Y Chen, X Wu, T Yu, X Zhou, B Yan, S Liu - Chemical Physics Letters, 2023 - Elsevier
Two-dimensional multistate potential energy surfaces along N–NO bond length and N–N–O
bond angle of N 2 O+ in the A 2 Σ+ and B 2 Π states were calculated at the CASPT2/cc …

Formation Mechanisms of Electronically Excited Nitrogen Molecules from N + N2 and N + N + N Collisions Revealed by Full-Dimensional Potential Energy Surfaces

C Xu, S Zhang, X Zan, H Hu, D **e… - The Journal of Physical …, 2023 - ACS Publications
This work reports six new full-dimensional adiabatic potential energy surfaces (PESs) of the
N3 system (four 4A ″states and two 2A ″states) at the MRCI+ Q/AVQZ level of theory that …

Electronic Quenching of N(2D) by N2: Theoretical Predictions, Comparison with Experimental Rate Constants, and Impact on Atmospheric Modeling

BRL Galvão, AJC Varandas, JP Braga… - The Journal of …, 2013 - ACS Publications
Rate constants for the electronic quenching reaction N (2D)+ N2→ N (4S)+ N2 are
calculated for temperatures over the range of 240≤ T/K≤ 1000 using an accurate set of …

Accurate ab initio-based double many-body expansion potential energy surface for the adiabatic ground-state of the C3 radical including combined Jahn-Teller plus …

CMR Rocha, AJC Varandas - The Journal of Chemical Physics, 2015 - pubs.aip.org
A fully ab initio-based potential energy surface is first reported for the ground electronic state
of the C 3 radical using the double many-body expansion (DMBE) method. The DMBE form …