Results 1 to 10 of about 822,424 (341)

Quantifying the ability of the CF2H group as a hydrogen bond donor [PDF]

open access: yesBeilstein Journal of Organic Chemistry
The CF2H group can act as a hydrogen bond donor, serving as a potential surrogate for OH or SH groups but with a weaker hydrogen bond donation ability.
Matthew E. Paolella   +4 more
doaj   +2 more sources

"Hydridic Hydrogen-Bond Donors" Are Not Hydrogen-Bond Donors. [PDF]

open access: yesJ Am Chem Soc
Herein, we dismiss a recent proposal by Civiš, Hobza, and co-workers to modify the IUPAC definition of hydrogen bonds in order to expand the scope from protonic Y-Hδ+ to hydridic Y-Hδ- hydrogen-bond donor fragments [J. Am. Chem. Soc. 2023, 145, 8550].
de Azevedo Santos L   +3 more
europepmc   +6 more sources

Hydrogen bonding characterization in water and small molecules [PDF]

open access: yes, 2017
The prototypical Hydrogen bond in water dimer and Hydrogen bonds in the protonated water dimer, in other small molecules, in water cyclic clusters, and in ice, covering a wide range of bond strengths, are theoretically investigated by first-principles calculations based on the Density Functional Theory, considering a standard Generalized Gradient ...
Silvestrelli, Pier Luigi
arxiv   +3 more sources

The Relation Between the Energy of a Hydrogen Bond and the Frequencies of the O–H Bands [PDF]

open access: green, 1940
It has previously been pointed out (1) that there appears to be a relation between the energy of a hydrogen bond and the shift of the frequency of the O-H bands which accompanies the formation of the bond.
Richard M. Badger
openalex   +4 more sources

The Hydrogen Bond of QCD [PDF]

open access: yesPhysical Review D, 2019
Using the Born-Oppenheimer approximation, we show that exotic resonances, X and Z, may emerge as QCD molecular objects made of colored two-quark lumps, states with heavy-light diquarks spatially separated from antidiquarks.
Maiani, L., Polosa, A. D., Riquer, V.
core   +4 more sources

Revealing the Reasons for Degeneration of Resonance-Assisted Hydrogen Bond on the Aromatic Platform: Calculations of Ortho-, Meta-, Para-Disubstituted Benzenes, and (Z)-(E)-Olefins

open access: yesMolecules, 2023
The energies of the O−H∙∙∙O=C intramolecular hydrogen bonds were compared quantitatively for the series of ortho-disubstituted benzenes and Z-isomers of olefins via a molecular tailoring approach.
Andrei V. Afonin, Danuta Rusinska-Roszak
doaj   +1 more source

Nature of the Hydrogen Bond Enhanced Halogen Bond

open access: yesMolecules, 2021
The factors responsible for the enhancement of the halogen bond by an adjacent hydrogen bond have been quantitatively explored by means of state-of-the-art computational methods. It is found that the strength of a halogen bond is enhanced by ca.
Susana Portela, Israel Fernández
doaj   +1 more source

Studies of Hydrogen Bond Vibrations of Hydrogen-Disordered Ice Ic

open access: yesCrystals, 2021
The hydrogen-disordered structure of ice, Ic, makes it difficult to analyze the vibrational normal modes in the far-infrared region (i.e., the molecular translation band).
Xu-Hao Yu   +8 more
doaj   +1 more source

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