Results 21 to 30 of about 3,648 (206)

The Interaction Strength, Frequency-shifts and Covalence of the C2H4O∙∙∙HOCl and C2H5N∙∙∙HOCl Heterocyclic Complexes

open access: yesOrbital: The Electronic Journal of Chemistry, 2017
A theoretical study of the structural parameters, electronic properties and vibration modes of the C2H4O∙∙∙HOCl and C2H5N∙∙∙HOCl complexes. The great particularity of these complexes is the O–Cl s-hole, which is considered a proton donor center due to ...
Boaz Galdino de Oliveira
doaj   +1 more source

Theoretical study of Fe-based biomimetic complexes interaction with nitrogen and hydrogen: energetics, QTAIM analysis, and the performance of xTB

open access: yesChemical Physics Impact, 2023
Nitrogen and hydrogen binding in three types of Peters systems (borane, alkyl, and silyl) is investigated in this work. Peters systems are studied in the perspective of an environmentally friendly ammonia synthesis alternative to the Haber-Bosch process.
Andrej Hlinčík   +2 more
doaj   +1 more source

Structural, Spectroscopic, and Chemical Bonding Analysis of Zn(II) Complex [Zn(sal)](H2O): Combined Experimental and Theoretical (NBO, QTAIM, and ELF) Investigation

open access: yesCrystals, 2020
The Zn(II) complex of salen-like scaffold [Zn(sal)](H2O) was synthesized and characterized by elemental analysis, IR, UV–Vis, and 1H-NMR spectroscopic techniques. The structure of complex was confirmed by single crystal X-ray diffraction studies.
Mohammad Usman   +7 more
doaj   +1 more source

Halogen Interactions in Halogenated Oxindoles: Crystallographic and Computational Investigations of Intermolecular Interactions

open access: yesMolecules, 2021
X-ray structural determinations and computational studies were used to investigate halogen interactions in two halogenated oxindoles. Comparative analyses of the interaction energy and the interaction properties were carried out for Br···Br, C-H···Br, C ...
Rodrigo A. Lemos Silva   +4 more
doaj   +1 more source

Roots of Acetate-Vanadium Linkage Isomerism: A QTAIM Study [PDF]

open access: yesInorganic Chemistry, 2016
The possibility of linkage isomerism in a number of vanadium(IV) and vanadium(V) complexes with acetate was surveyed using Density Functional Theory (DFT) and Bader's Quantum Theory of Atoms in Molecules (QTAIM). The results show that vanadium-acetate linkages may be classified as bidentate symmetrical, bidentate asymmetrical, or monodentate, the ...
Filipe, Teixeira   +4 more
openaire   +2 more sources

QTAIM analysis dataset for non-covalent interactions in furan clusters

open access: yesData in Brief, 2022
Furan clusters are very important to understand the dynamics and properties of the furan solvent. They can be used combined with quantum cluster equilibrium theory to theoretically determine the thermodynamics properties of the furan solvent. To understand the structures of the furan clusters, one needs to understand the non-covalent interactions that ...
Alhadji Malloum, Jeanet Conradie
openaire   +4 more sources

Halogen and Hydrogen Bonding in Halogenabenzene/NH3 Complexes Compared Using Next-Generation QTAIM

open access: yesMolecules, 2019
Next-generation quantum theory of atoms in molecules (QTAIM) was used to investigate the competition between hydrogen bonding and halogen bonding for the recently proposed (Y = Br, I, At)/halogenabenzene/NH3 complex. Differences between using the SR-ZORA
Shuman Li   +5 more
doaj   +1 more source

Comparisons between Crystallography Data and Theoretical Parameters and the Formation of Intramolecular Hydrogen Bonds: Benznidazole

open access: yesCrystals, 2016
The conformational preferences of benznidazole were examined through the application of DFT, PCM and QTAIM calculations, whose results were compared with crystallography data.
Boaz G. Oliveira   +2 more
doaj   +1 more source

QTAIM based descriptors for the classification of acrylates

open access: yesTheoretical Chemistry Accounts, 2023
AbstractAcrylates are used in cosmetics, orthopedics, paints, coatings, adhesives, textiles, and biomedical applications such as contact lenses and bone cements. However, some acrylates are mutagenic and the aim of this article is to explain the mutagenicity in terms of the atomic population redistribution in the molecule using two new descriptors ...
David A. Rincón   +3 more
openaire   +1 more source

A INFLUÊNCIA DA LIGAÇÃO DE HIDROGÊNIO EM REAÇÕES QUÍMICAS: REAÇÃO DE PRILESCHAJEW

open access: yesQuímica Nova, 2015
Theoretical analysis at the BHandHLYP/6-311++G(d,p) level of theory with the support of QTAIM calculations was used to reinvestigate the structure of an intermolecular system formed between ethylene oxide (C2H4O) and formic acid (HCO2H) after the ...
Mauro A. Bueno, Boaz G. Oliveira
doaj   +1 more source

Home - About - Disclaimer - Privacy