Analysis of conformational, structural, magnetic, and electronic properties related to antioxidant activity: revisiting flavan, anthocyanidin, flavanone, flavonol, isoflavone …

SA de Souza Farias, KS da Costa, JBL Martins - ACS omega, 2021 - ACS Publications
Understanding the antioxidant activity of flavonoids is important to investigate their biological
activities as well as to design novel molecules with low toxicity and high activity. Aromaticity …

Core-electron contributions to the molecular magnetic response

M Orozco-Ic, ND Charistos, A Muñoz-Castro… - Physical Chemistry …, 2022 - pubs.rsc.org
Orbital contributions to the magnetic response depend on the method used to compute
them. Here, we show that dissecting nuclear magnetic shielding tensors using natural …

Quantitative assessment of aromaticity and antiaromaticity utilizing vibrational spectroscopy

D Setiawan, E Kraka, D Cremer - The Journal of Organic …, 2016 - ACS Publications
Vibrational frequencies can be measured and calculated with high precision. Therefore, they
are excellent tools for analyzing the electronic structure of a molecule. In this connection, the …

On splitting of the NICS (1) magnetic aromaticity index

JC Dobrowolski, PFJ Lipiński - RSC advances, 2016 - pubs.rsc.org
The NICS (1) magnetic aromaticity index is split into NICS (1) and NICS (− 1) indices when
the points 1 Å above and below the ring center are inequivalent by symmetry. The two …

On aromaticity of the aromatic α-amino acids and tuning of the NICS indices to find the aromaticity order

WM Dudek, S Ostrowski… - The Journal of Physical …, 2022 - ACS Publications
The NICS aromaticity indices of the rings in flexible phenylalanine (Phe), tryptophan (Trp),
tyrosine (Tyr), and histidine (His) chiral molecules were analyzed. These molecules have …

Consequences of curvature on induced magnetic field: the case of helicenes

M Orozco‐Ic, J Barroso, ND Charistos… - … A European Journal, 2020 - Wiley Online Library
Helicenes consist of several fused rings twisted around an axis, forming a cylindrical helix,
with π‐delocalized electrons in the non‐planar rings. Induced magnetic fields dissecting the …

Toward a Generalized Hückel Rule: The Electronic Structure of Carbon Nanocones

YB Apriliyanto, S Battaglia, S Evangelisti… - The Journal of …, 2021 - ACS Publications
In this work, we investigate a particular class of carbon nanocones, which we name
graphannulenes, and present a generalized Hückel rule (GHR) that predicts the character …

Fast prediction of oxygen reduction reaction activity on carbon nanotubes with a localized geometric descriptor

K Yang, J Zaffran, B Yang - Physical Chemistry Chemical Physics, 2020 - pubs.rsc.org
The oxygen reduction reaction (ORR) is a process of primary importance in fuel cell
technology. The efficiency of carbon-based materials in this field has been already …

Effect of boron doping in sumanene frame toward hydrogen physisorption: A theoretical study

A Reisi-Vanani, S Mehrdoust - International Journal of Hydrogen Energy, 2016 - Elsevier
Because of carbon-based materials have shown excellent results for the adsorption of
hydrogen as an energy source, in this study, adsorption properties of 26 boron disubstituted …

Theoretical study on the structures, electronic properties, and aromaticity of thia [4] circulenes

S Hashimoto, R Kishi, K Tahara - New Journal of Chemistry, 2022 - pubs.rsc.org
The structures, electronic properties, and aromaticity of a series of thia [4] circulenes are
predicted using quantum chemical calculations. All the thia [4] circulenes studied adopt bowl …