Results 11 to 20 of about 166,181 (310)

Periodic DFT Calculations—Review of Applications in the Pharmaceutical Sciences [PDF]

open access: yesPharmaceutics, 2020
In the introduction to this review the complex chemistry of solid-state pharmaceutical compounds is summarized. It is also explained why the density functional theory (DFT) periodic calculations became recently so popular in studying the solid APIs ...
Anna Helena Mazurek   +2 more
doaj   +6 more sources

BH-DFTB/DFT calculations for iron clusters [PDF]

open access: yesAIP Advances, 2016
We present a study on the structural, electronic, and magnetic properties of Fen(n  =  2  −  20) clusters by performing density functional tight binding (DFTB) calculations within a basin hopping (BH) global optimization search followed by density ...
Abdurrahman Aktürk, Ali Sebetci
doaj   +4 more sources

Sildenafil–Resorcinol Cocrystal: XRPD Structure and DFT Calculations

open access: yesCrystals, 2020
Herein, the X-ray powder diffraction (XRPD) crystal structure of a new Sildenafil cocrystal is reported, where resorcinol has been used as the coformer.
Rafael Barbas   +4 more
doaj   +2 more sources

Quinoline-Based Materials: Spectroscopic Investigations as well as DFT and TD-DFT Calculations

open access: yesJournal of Chemistry, 2022
Quinoline derivatives such as 15,15-difluoro-[1,3,2] diaazaborininodiquinoline (DDP) and 15,15-difluoro-[1,3,2] diaazaborininodiquinoline acetonitrile (DDPA) have a range of biological and medical activities.
Mahmoud A. S. Sakr   +4 more
doaj   +2 more sources

Materials Database from All-electron Hybrid Functional DFT Calculations [PDF]

open access: yesScientific Data
Materials databases built from calculations based on density functional approximations play an important role in the discovery of materials with improved properties. Most databases thus constructed rely on the generalized gradient approximation (GGA) for
Akhil S. Nair   +2 more
doaj   +2 more sources

Synthesis, Characterisation and DFT Calculations of Azo-Imine Dyes

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2017
In this study, azo dyes containing an imine group were synthesised by coupling p-hydroxybenzylidene aniline with the diazonium salts of p-toluidine, 4-aminophenol, aniline, p-chloroaniline, p-fluoroaniline, and p-nitroaniline.
Sevil Özkınalı   +2 more
doaj   +2 more sources

Understanding the Interaction of glycine amino acid with graphene: An Alternative Theoretical Approach Based on Density Functional Theory [PDF]

open access: yesJournal of Chemistry Letters, 2020
The present work utilizes density functional theory (DFT) calculations to investigate the interaction of glycine amino acid with graphene. Quantum chemical calculations by DFT provide detailed geometrical parameters, electronic properties and the ...
maedeh kamel, kamal Mohammadifard
doaj   +1 more source

DFT Approach to the Calculation of Mössbauer Isomer Shifts [PDF]

open access: yesJournal of Chemical Theory and Computation, 2008
With the help of a recently suggested computational scheme [J. Chem. Phys. 2007, 127, 084101], Mössbauer isomer shifts are calculated within the context of density functional theory, for a series of iron containing compounds. The influence of the choice of a density functional and of the truncation of a basis set on the results of calculations is ...
Kurian, Reshmi, Filatov, Michael
openaire   +3 more sources

A density-functional-theory-based and machine-learning-accelerated hybrid method for intricate system catalysis

open access: yesMaterials Reports: Energy, 2021
Being progressively applied in the design of highly active catalysts for energy devices, machine learning (ML) technology has shown attractive ability of dramatically reducing the computational cost of the traditional density functional theory (DFT ...
Xuhao Wan   +3 more
doaj   +1 more source

Parallel Implementation of Large-Scale Linear Scaling Density Functional Theory Calculations With Numerical Atomic Orbitals in HONPAS

open access: yesFrontiers in Chemistry, 2020
Linear-scaling density functional theory (DFT) is an efficient method to describe the electronic structures of molecules, semiconductors, and insulators to avoid the high cubic-scaling cost in conventional DFT calculations.
Zhaolong Luo   +4 more
doaj   +1 more source

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