A mountaineering strategy to excited states: Highly accurate reference energies and benchmarks

PF Loos, A Scemama, A Blondel… - Journal of chemical …, 2018 - ACS Publications
Striving to define very accurate vertical transition energies, we perform both high-level
coupled cluster (CC) calculations (up to CCSDTQP) and selected configuration interaction …

Reference energies for double excitations

PF Loos, M Boggio-Pasqua, A Scemama… - Journal of chemical …, 2019 - ACS Publications
Excited states exhibiting double-excitation character are notoriously difficult to model using
conventional single-reference methods, such as adiabatic time-dependent density functional …

Three decades of unveiling the complex chemistry of C-nitroso species with computational chemistry

P Bianchi, JCM Monbaliu - Organic Chemistry Frontiers, 2022 - pubs.rsc.org
C-Nitroso species are characterized by a unique nitrogen–oxygen combination located next
to a carbon backbone, which confers them a unique ambiphilic and high reactivity towards …

Influence of Mode-Specific Excitation on the Nonadiabatic Dynamics of Methyl Nitrate (CH3ONO2)

J Zhang, J Peng, Y Zhu, D Hu, Z Lan - The Journal of Physical …, 2023 - ACS Publications
The impact of mode-specific vibrational excitations on initial-preparation conditions was
studied by examining the excited-state population decay rates in the nonadiabatic dynamics …

Organic Reactivity Made Easy and Accurate with Automated Multireference Calculations

JJ Wardzala, DS King, L Ogunfowora… - ACS Central …, 2024 - ACS Publications
In organic reactivity studies, quantum chemical calculations play a pivotal role as the
foundation of understanding and machine learning model development. While prevalent …

A SA-CASSCF and MS-CASPT2 study on the electronic structure of nitrosobenzene and its relation to its dissociation dynamics

J Soto, D Peláez, JC Otero - The Journal of Chemical Physics, 2021 - pubs.aip.org
The photodissociation channels of nitrosobenzene (PhNO) induced by a 255 nm photolytic
wavelength have been studied using the complete active space self-consistent method and …

Conical intersections and intersystem crossings explain product formation in photochemical reactions of aryl azides

J Soto, JC Otero, FJ Avila, D Peláez - Physical Chemistry Chemical …, 2019 - pubs.rsc.org
Photochemistry of 3-and 4-methoxyphenyl azide at 266 nm has been studied by means of
the complete active space self-consistent field (CASSCF) and multi-configurational second …

[HTML][HTML] CASPT2 study of the electronic structure and photochemistry of protonated N-nitrosodimethylamine (NDMA-H+) at 453 nm

J Soto, D Peláez, M Algarra - The Journal of Chemical Physics, 2023 - pubs.aip.org
In this work, we have studied the photodissociation of the protonated derivatives of N-
nitrosodimethylamine [(CH 3) 2 N–NO] with the CASPT2 method. It is found that only one of …

Conservation of El-Sayed's Rules in the Photolysis of Phenyl Azide: Two Independent Decomposition Doorways for Alternate Direct Formation of Triplet and Singlet …

J Soto, JC Otero - The Journal of Physical Chemistry A, 2019 - ACS Publications
In the present work, we demonstrate that the formation of triplet and singlet phenylnitrene,
when arises from the photodissociation of phenyl azide, fulfills El-Sayed's rules or the …

Application of surface-enhanced resonance Raman scattering (SERS) to the study of organic functional materials: electronic structure and charge transfer properties of …

J Soto, E Imbarack, I López-Tocón, S Sánchez-Cortés… - RSC …, 2019 - pubs.rsc.org
The electron donor–acceptor properties of 9, 10-bis ((E)-2-(pyridin-4-yl) vinyl) anthracene
(BP4VA) are studied by means of surface-enhanced Raman scattering (SERS) spectroscopy …