scholarly journals Periodic DFT Calculations—Review of Applications in the Pharmaceutical Sciences

Pharmaceutics ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 415 ◽  
Author(s):  
Anna Helena Mazurek ◽  
Łukasz Szeleszczuk ◽  
Dariusz Maciej Pisklak
Keyword(s):  
Dft Calculations ◽  
Structure Prediction ◽  
Density Functional ◽  
Drug Analysis ◽  
Pharmaceutical Sciences ◽  
Pharmaceutical Ingredients ◽  
Complex Chemistry ◽  
Periodic Dft Calculations ◽  
Periodic Calculations ◽  
Periodic Dft

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 (active pharmaceutical ingredients). Further, the most popular programs enabling DFT periodic calculations are presented and compared. Subsequently, on the large number of examples, the applications of such calculations in pharmaceutical sciences are discussed. The mentioned topics include, among others, validation of the experimentally obtained crystal structures and crystal structure prediction, insight into crystallization and solvation processes, development of new polymorph synthesis ways, and formulation techniques as well as application of the periodic DFT calculations in the drug analysis.

scholarly journals Vibrational Dynamics of Crystalline 4-Phenylbenzaldehyde from INS Spectra and Periodic DFT Calculations

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1374
Author(s):  
Mariela M. Nolasco ◽  
Catarina F. Araujo ◽  
Pedro D. Vaz ◽  
Ana M. Amado ◽  
Paulo Ribeiro-Claro
Keyword(s):  
Dft Calculations ◽  
Single Molecule ◽  
Density Functional ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Torsional Mode ◽  
Functional Theory ◽  
Periodic Dft Calculations ◽  
Periodic Calculations ◽  
Unambiguous Assignment

The present work emphasizes the value of periodic density functional theory (DFT) calculations in the assessment of the vibrational spectra of molecular crystals. Periodic calculations provide a nearly one-to-one match between the calculated and observed bands in the inelastic neutron scattering (INS) spectrum of crystalline 4-phenylbenzaldehyde, thus validating their assignment and correcting previous reports based on single molecule calculations. The calculations allow the unambiguous assignment of the phenyl torsional mode at ca. 118–128 cm−1, from which a phenyl torsional barrier of ca. 4000 cm−1 is derived, and the identification of the collective mode involving the antitranslational motion of CH···O bonded pairs, a hallmark vibrational mode of systems where C-H···O contacts are an important feature.

The prediction of far-infrared spectra for planetary nitrile ices using periodic density functional theory with comparison to thin film experiments

2018 ◽  
Vol 20 (36) ◽  
pp. 23593-23605 ◽  
Author(s):  
C. Ennis ◽  
R. Auchettl ◽  
D. R. T. Appadoo ◽  
E. G. Robertson
Keyword(s):  
Thin Film ◽  
Density Functional Theory ◽  
Dft Calculations ◽  
Density Functional ◽  
Far Infrared ◽  
High Accuracy ◽  
Functional Theory ◽  
Periodic Dft Calculations ◽  
Far Infrared Spectra ◽  
Periodic Dft

The application of high accuracy periodic DFT calculations to replicate laboratory thin film spectra allowing the assignment of vibrational far-infrared modes in nitrile-bearing planetary ices.

Exploring the methanol decomposition mechanism on the Pt3Ni(100) surface: a periodic density functional theory study

2018 ◽  
Vol 20 (15) ◽  
pp. 10132-10141 ◽  
Author(s):  
Pan Du ◽  
Yuan Gao ◽  
Ping Wu ◽  
Chenxin Cai
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Decomposition Reaction ◽  
Methanol Decomposition ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Detailed Mechanism ◽  
Self Consistent ◽  
Periodic Dft Calculations ◽  
Periodic Dft

The detailed mechanism of the methanol decomposition reaction on the Pt3Ni(100) surface is studied based on self-consistent periodic DFT calculations.

scholarly journals Unraveling reaction networks behind the catalytic oxidation of methane with H2O2 over a mixed-metal MIL-53(Al,Fe) MOF catalyst

2018 ◽  
Vol 9 (33) ◽  
pp. 6765-6773 ◽  
Author(s):  
Ágnes Szécsényi ◽  
Guanna Li ◽  
Jorge Gascon ◽  
Evgeny A. Pidko
Keyword(s):  
Dft Calculations ◽  
Catalytic Oxidation ◽  
Metal Organic Framework ◽  
Reaction Networks ◽  
Reaction Paths ◽  
Mixed Metal ◽  
Oxidation Of Methane ◽  
Metal Organic ◽  
Periodic Dft Calculations ◽  
Periodic Dft

Reaction paths underlying the catalytic oxidation of methane with H2O2 over an Fe containing MIL-53(Al) metal–organic framework were studied by periodic DFT calculations.

Mn-Doped black phosphorene for ultrasensitive hydrogen sulfide detection: periodic DFT calculations

2020 ◽  
Vol 22 (27) ◽  
pp. 15549-15558 ◽  
Author(s):  
Mahdi Ghadiri ◽  
Mohammad Ghashghaee ◽  
Mehdi Ghambarian
Keyword(s):  
Hydrogen Sulfide ◽  
Dft Calculations ◽  
Work Function ◽  
Electrical Conductance ◽  
Black Phosphorus ◽  
Mn Doping ◽  
Black Phosphorene ◽  
Periodic Dft Calculations ◽  
Mn Doped ◽  
Periodic Dft

A drastic improvement in both the electrical conductance and work function sensitivities of black phosphorus monolayer to H2S through Mn doping is reported. The operation of the modified nanosensor is more promising than for the pristine material.

scholarly journals Preparation of Zirconium Oxide Powder Using Zirconium Carboxylate Precursors

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Mohammed H. Al-Hazmi ◽  
YongMan Choi ◽  
Allen W. Apblett
Keyword(s):  
Dft Calculations ◽  
Density Functional ◽  
Dissociative Adsorption ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
Experimental Findings ◽  
Periodic Dft Calculations ◽  
Good Agreement

Zirconia was prepared at low temperatures (<450°C) using single several source precursors based on zirconium carboxylates where the R groups were systematically varied. The combination of density functional theory (DFT) calculations and extensive characterization of the precursors (i.e., X-ray diffraction, thermal gravimetric analysis, infrared spectroscopy, and scanning electron microscopy) indicated that the carboxylic acid complexes may link the zirconium metal with a cis bidentate configuration. Periodic DFT calculations were performed to examine the interaction between monoclinic ZrO2 and propanoic acid. Dissociative adsorption takes place through the cis bidentate structure with an adsorption energy of −1.43 eV. Calculated vibrational frequencies using the optimized structure are in good agreement with experimental findings.

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