Results 41 to 50 of about 203,361 (319)

ELECTRON PARAMETERS OF THE STRUCTURAL ISOMERS OF k,k DIFLUOROOCTANE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020
The investigation of the electronic structure of the 6,6 difluorine undecane (6,6 — F2C11H22 ) and structural isomers of k,k - difluorine octane molecules ( k,k — F2C8H16 , 1 ≤ k ≤ 8 where k is a position of the fluorine atoms in alkyl chain) has been ...
A.V. Kotomkin   +3 more
doaj   +1 more source

Electronic integral characteristics of groups in the fluoro-substituted of isobutan and neopentan [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
Within a «quantum theory of atoms in molecules» (QTAIM) the equilibrium geometry and the electron structure of fluoro-substituted molecules (CH3)2−CH−CH(3-n)Fn and (CH3)3−C−CH(3-n)Fn, where 1 ≤ n ≤ 3, were studied.
A.V. Kotomkin   +3 more
doaj   +1 more source

Tetrel Interactions from an Interacting Quantum Atoms Perspective

open access: yesMolecules, 2019
Tetrel bonds, the purportedly non-covalent interaction between a molecule that contains an atom of group 14 and an anion or (more generally) an atom or molecule with lone electron pairs, are under intense scrutiny. In this work, we perform an interacting
José Luis Casals-Sainz   +3 more
doaj   +1 more source

Relativistic (SR‐ZORA) quantum theory of atoms in molecules properties

open access: yesJournal of Computational Chemistry, 2016
The Quantum Theory of Atoms in Molecules (QTAIM) is used to elucidate the effects of relativity on chemical systems. To do this, molecules are studied using density‐functional theory at both the nonrelativistic level and using the scalar relativistic zeroth‐order regular approximation.
James S. M. Anderson   +3 more
openaire   +3 more sources

Non-conventional interactions of N3 inhibitor with the main protease of SARS-CoV and SARS-CoV-2

open access: yesComputational and Structural Biotechnology Journal, 2021
The extensive spread of COVID-19 in every continent shows that SARS-CoV-2 virus has a higher transmission rate than SARS-CoV virus which emerged in 2002. This results in a global pandemic that is difficult to control.
Ponciano García-Gutiérrez   +5 more
doaj   +1 more source

String order in dipole-blockaded quantum liquids [PDF]

open access: yes, 2014
We study the quantum melting of quasi-one-dimensional lattice models in which the dominant energy scale is given by a repulsive dipolar interaction. By constructing an effective low-energy theory, we show that the melting of crystalline phases can occur ...
Weimer, Hendrik
core   +3 more sources

Quantum chemistry study on the promoted reactivity of substituted cyclooctynes in bioorthogonal cycloaddition reactions

open access: yesHeterocyclic Communications, 2021
In the present research, we focus on the energetics and electronic aspects of enhanced reactivity in the regioselective bioorthogonal 1,3-dipolar cycloaddition reaction of various substituted cyclooctynes with methyl azide, applying quantum chemistry ...
Hosseinnejad Tayebeh   +1 more
doaj   +1 more source

Optimal control of photoelectron emission by realistic waveforms [PDF]

open access: yes, 2016
Recent experimental techniques in multicolor waveform synthesis allow the temporal shaping of strong femtosecond laser pulses with applications in the control of quantum mechanical processes in atoms, molecules, and nanostructures.
Ciappina, Marcelo F.   +2 more
core   +2 more sources

Effect of free valence on the electronic structure of n-alcohol radicals

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
The paper presents the results of a study of the effect of free valence (when a hydrogen atom is separated) on the electronic structure of n-alcohol radicals by the example of radicals of n-heptanol derivatives (C●H2-(CH2)6OH, CH3-C●H-(CH2)5OH, C2H5-C●H-(
V.V. Turovtsev   +3 more
doaj   +1 more source

An Examination of the Electron Densities in a Series of Tripodal Cobalt Complexes Bridged by Magnesium, Calcium, Strontium, and Barium †

open access: yesCrystals, 2018
X-ray crystallographic and theoretical charge-density data for a series of compounds—[(Co(Ts3tren))M(Co(Ts3tren))], (M = Mg, Ca, Sr and Ba)—were examined.
John Bacsa   +4 more
doaj   +1 more source

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