Results 21 to 30 of about 24,268 (256)

Density functional theory studies on molecular structure, vibrational spectra, AIM, HOMO-LUMO, electronic properties, and NBO analysis of benzoic acid monomer and dimer

open access: yesVietnam Journal of Science, Technology and Engineering, 2023
In this study, the molecular structure, vibrational frequencies, and atom-in-molecule (AIM) analysis of the benzoic acid monomer and dimer were investigated.
Tan Trung Truong   +4 more
doaj   +1 more source

Quantification of the Properties of Organic Molecules Using Core‐Loss Spectra as Neural Network Descriptors

open access: yesAdvanced Intelligent Systems, 2022
Artificial neural networks are applied to quantify the properties of organic molecules by introducing a new descriptor, a core‐loss spectrum, which is typically observed experimentally using electron or X‐ray spectroscopy.
Kakeru Kikumasa   +3 more
doaj   +1 more source

HOMO–LUMO Gaps and Molecular Structures of Polycyclic Aromatic Hydrocarbons in Soot Formation

open access: yesFrontiers in Mechanical Engineering, 2021
A large number of PAH molecules is collected from recent literature. The HOMO-LUMO gap value of PAHs was computed at the level of B3LYP/6-311+G (d,p). The gap values lie in the range of 0.64–6.59 eV.
Yabei Xu   +3 more
doaj   +1 more source

DFT Study of Heteronuclear (TMFeO3)x Molecular Clusters (Where TM = Sc, Ti, Fe and x = 2, 4, 8) for Photocatalytic and Photovoltaic Applications

open access: yesEnergies, 2022
The computational modeling of metal oxide clusters for photovoltaic application is carried out by using density functional theory. The structural and electronic properties of heteronuclear (TMFeO3)x molecular clusters (where x = 2, 4, 8 and TM = Sc, Ti ...
Abdul Majid   +4 more
doaj   +1 more source

Facile Synthesis of 5-Aryl-N-(pyrazin-2-yl)thiophene-2-carboxamides via Suzuki Cross-Coupling Reactions, Their Electronic and Nonlinear Optical Properties through DFT Calculations

open access: yesMolecules, 2021
Synthesis of 5-aryl-N-(pyrazin-2-yl)thiophene-2-carboxamides (4a–4n) by a Suzuki cross-coupling reaction of 5-bromo-N-(pyrazin-2-yl)thiophene-2-carboxamide (3) with various aryl/heteroaryl boronic acids/pinacol esters was observed in this article.
Gulraiz Ahmad   +9 more
doaj   +1 more source

Investigate the electrical and thermoelectric properties of M@C60 where (M=Co, Ni): A DFT study [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
Density functional theory combined with nonequivalent greens function was carried out to study the M@C60 single-molecule junctions between two gold electrodes, where M=Co and Ni.
Anhar alfahdawi, Alaa Al-Jobory
doaj   +1 more source

Solvents effects: Density Functional Theory studies of Trans-Cinnamaldehyde [PDF]

open access: yesشیمی کاربردی روز, 2016
In the present investigation, HOMO-LUMO energy gap, polarizability, structural parameters, molecular mass, hardness, chemical potential and electrophilicity index of the trans-cinnamaldehyde as one of the active ingredients of cinnamon in the gas phase ...
لیلی رحیمی اهر   +1 more
doaj   +1 more source

DFT study and NBO analysis of solvation/substituent effects of 3-phenylbenzo[d]thiazole-2(3H)-imine derivatives [PDF]

open access: yesJournal of the Serbian Chemical Society, 2020
In this work, to determine natural bond orbital (NBO) analysis, solvation and substituent effects for electron-releasing substituents (CH3, OH) and electron-withdrawing derivatives (Cl, NO2, CF3) in para positions on the molecular structure of the ...
Miar Marzieh   +4 more
doaj   +1 more source

Study of Tl-based perovskite materials TlZX3 (Z = Ge, Sn, Be, Sr; X = Cl, Br, I) for application in scintillators: DFT and TD-DFT approach

open access: yesChemical Physics Impact, 2023
Scintillators are designed significantly for utilization in a broad range of technology fields, notably nuclear physics, healthcare testing, and materials analysis.
Pooja Sharma   +2 more
doaj   +1 more source

Driving the Emission Towards Blue by Controlling the HOMO‐LUMO Energy Gap in BF2‐functionalized 2‐(imidazo[1,5‐a]pyridin‐3‐yl)phenols [PDF]

open access: yes, 2021
Several boron compounds with 2-(imidazo[1,5- a ]pyridin-3-yl)phenols, differentiated by the nature of the substituent (R) in the para position of the hydroxy group, have been synthesized and thoroughly characterized both in solution ( 1 H, 13 C, 11 B, 19
Brenna S.   +14 more
core   +1 more source

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