scholarly journals Study of molecular interactions and chemical reactivity of the nitrofurantoin–3-aminobenzoic acid cocrystal using quantum chemical and spectroscopic (IR, Raman, 13C SS-NMR) approaches

CrystEngComm ◽  
2017 ◽  
Vol 19 (28) ◽  
pp. 3921-3930 ◽  
Author(s):  
Anuradha Shukla ◽  
Eram Khan ◽  
Karnica Srivastava ◽  
Kirti Sinha ◽  
Poonam Tandon ◽  
...  
Keyword(s):  
Molecular Interactions ◽  
Quantum Chemical ◽  
Chemical Reactivity ◽  
Aminobenzoic Acid ◽  
Vibrational Characterization

Inquiries of structural reactivity, molecular interactions and vibrational characterization of drugs are essential in understanding their behaviour.

Topological aspects of chemical reactivity. Valency changes in the course of chemical reactions

1987 ◽  
Vol 52 (11) ◽  
pp. 2603-2612 ◽  
Author(s):  
Robert Ponec
Keyword(s):  
Electron Density ◽  
Chemical Reactions ◽  
Chemical Treatment ◽  
Quantum Chemical ◽  
Chemical Reactivity ◽  
Topological Analysis ◽  
Topological Description

The Jug and Gopinathan approach to the use of valency changes for the characterization of chemical reactions is generalized by incorporating it into the framework of the recently proposed topological description of chemical reactivity in terms of the overlap determinant method. The conclusions of the simple topological analysis agree with the results of the direct quantum chemical treatment, indicating thus that the overlap determinant method depicts correctly the principal features of the electron density reorganization occuring during the chemical reactions.

Characterization of Molecular Interactions of Mytilus edulis Foot Proteins on Model Hydrated Surfaces

2001 ◽  
Author(s):  
Gill G. Geesey ◽  
Peter A. Suci ◽  
Peter R. Griffiths ◽  
Georges Belfort
Keyword(s):  
Mytilus Edulis ◽  
Molecular Interactions

Structural Characterization of Natural Products By Means of Quantum Chemical Calculations of NMR Parameters: New insights

2021 ◽  
Author(s):  
Fabio Luiz Paranhos Costa ◽  
Ana Carolina Ferreira de Albuquerque ◽  
Rodolfo Goetze Fiorot ◽  
Luciano Morais Lião ◽  
Lucas Haidar Martorano ◽  
...  
Keyword(s):  
Natural Products ◽  
Structural Characterization ◽  
Quantum Chemical ◽  
Chemical Shifts ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Nmr Parameters ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling

The calculation of NMR parameters for natural products was pioneered by Bifulco and coworkers in 2002. Since then, modelling 1H and 13C chemical shifts and spin-spin coupling constants for this...

ChemInform Abstract: Synthesis, Structure Determination, and Quantum-Chemical Characterization of an Alternate HgNCN Polymorph.

ChemInform ◽  
2010 ◽  
Vol 33 (43) ◽  
pp. no-no
Author(s):  
Xiaohui Liu ◽  
Paul Mueller ◽  
Peter Kroll ◽  
Richard Dronskowski
Keyword(s):  
Structure Determination ◽  
Quantum Chemical ◽  
Chemical Characterization

scholarly journals Vibrational Characterization of Simple Peptides Using Cryogenic Infrared Photodissociation of H2-Tagged, Mass-Selected Ions

2011 ◽  
Vol 133 (16) ◽  
pp. 6440-6448 ◽  
Author(s):  
Michael Z. Kamrath ◽  
Etienne Garand ◽  
Peter A. Jordan ◽  
Christopher M. Leavitt ◽  
Arron B. Wolk ◽  
...  
Keyword(s):  
Vibrational Characterization

The optoelectronic properties of π-conjugated organic molecules based on terphenyl and pyrrole for BHJ solar cells: DFT / TD-DFT theoretical study

2021 ◽  
Vol 10 (4) ◽  
pp. 489-502 ◽  
Author(s):  
M. Raftani ◽  
T. Abram ◽  
W. Loued ◽  
R. Kacimi ◽  
A. Azaid ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Chemical ◽  
Chemical Method ◽  
Chemical Reactivity ◽  
Optoelectronic Properties ◽  
Oscillator Strengths ◽  
Frontier Molecular Orbital ◽  
Bandgap Energy ◽  
Quantum Chemical Method ◽  
Td Dft

In the present paper, four π-conjugated materials, based on terphenyl and pyrrole, with A–D–A structure have been theoretically studied to propose new organic compounds to be used in the organic solar cell field. Moreover, the geometrical and optoelectronic properties of the designed molecules M1, M2, M3 and M4 have been computed after optimization in their fundamental states, using the quantum chemical method DFT / B3LYP/ 6−311G (d, p). Different parameters including HOMO and LUMO energy levels, bandgap energy, frontier molecular orbital (FMO), chemical reactivity indices, the density of states (DOS), Voc, electrostatic potential (ESP), and thermodynamic parameters at several temperatures in the range of 0-500 K have been determined. The absorption properties including the transition energy, the wavelengths (λmax), the excitation vertical energy, and the corresponding oscillator strengths of these molecules have been studied using the quantum chemical method TD−DFT / CAM–B3LYP / 6–311G (d, p). The obtained results of our studied compounds show that M3 (with 2H, 2'H-1, 1'-biisoindole moiety) as a donor group has special optoelectronic, absorption, and good photovoltaic characteristics. Thus, they can be utilized as an electron-donating in organic solar cells BHJ type.

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