Decoding chemical bonds: assessment of the basis set effect on overlap electron density descriptors and topological properties in comparison to QTAIM

CV Santos Jr, SA Monteiro, ASC Soares… - The Journal of …, 2023 - ACS Publications
Quantum chemical bonding descriptors based on the total and overlap density can provide
valuable information about chemical interactions in different systems. However, these …

Exploring Trans Effect Concept in Pt(II) Complexes through the Quantum Theory of Atoms in Molecules and Chemical Bond Overlap Model Perspectives

CV Santos‐Jr, GMB Da Silva, RP Dias… - Advanced Theory …, 2024 - Wiley Online Library
Abstract This study utilizes Density Functional Theory (DFT) alongside the Chemical Bond
Overlap (OP) Model and Quantum Theory of Atoms in Molecules (QTAIM) to reinterpret the …

[HTML][HTML] Adaptive guided stochastic optimization: A novel approach for fitting the theoretical intensity parameters for lanthanide compounds

CV Santos-Jr, EC Aguiar, ANC Neto, RT Moura Jr - Optical Materials: X, 2023 - Elsevier
In this study, we introduce a state-of-the-art approach to enhance the fitting accuracy of
theoretical intensity parameters in lanthanide spectroscopy. Lanthanide-based compounds …

Bond analysis in meta- and para-substituted thiophenols: overlap descriptors, local mode analysis, and QTAIM

WG Barbosa, CV Santos-Jr, RB Andrade… - Journal of Molecular …, 2024 - Springer
Context This study delves into the chemical nuances of thiophenols and their derivatives
through a comprehensive computational analysis, moving beyond traditional energetic …

[HTML][HTML] Metaheuristic optimisation of Gaussian process regression model hyperparameters: Insights from FEREBUS

BK Isamura, PLA Popelier - Artificial Intelligence Chemistry, 2023 - Elsevier
FEREBUS is a Gaussian process regression (GPR) engine embedded in the large
machinery of FFLUX, a novel machine learnt force field developed from scratch through …

Chemical bond overlap descriptors from multiconfiguration wavefunctions

CV Santos‐Jr, E Kraka… - Journal of Computational …, 2025 - Wiley Online Library
The chemical bond is a fundamental concept in chemistry, and various models and
descriptors have evolved since the advent of quantum mechanics. This study extends the …

Theoretical insights into the vibrational spectra and chemical bonding of Ln (iii) complexes with a tripodal N 4 O 3 ligand along the lanthanide series

FC Machado, M Quintano, CV Santos-Jr… - Physical Chemistry …, 2025 - pubs.rsc.org
This study provides new theoretical insights into the vibrational spectra of Ln (III) complexes,
along the lanthanide series by utilizing the LModeAGen protocol and integrating cutting …

Analysis of spectator chemical bonds in SN2@ C and@ Si reaction mechanisms in the gas phase

CV Santos-Jr, MAF de Souza, E Kraka… - Chemical Physics …, 2022 - Elsevier
In this work, Cl−+ AR 3 Cl reactions (with A= C and Si, and R= H, Me, Et, Cl, and F) were
investigated to evaluate the A–R spectator bond properties at the ω-B97X-D/SPK-TZP level …

Spectroscopic effects on natural occurring O-sulfated flavones from Wissadula periplocifolia

YCF Teles, PG Pereira-Júnior, CV Santos-Jr… - Phytochemistry …, 2025 - Elsevier
Natural occurring O-sulfated flavonoids have been reported from the plant specie Wissadula
periplocifolia Presl.(Malvaceae). Sulfated flavonoids are considered uncommon flavonoid …