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

open access: yesJ Am Chem Soc
[Image: see text] 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–H(δ+) to hydridic Y–H(δ−) hydrogen-bond donor fragments [J. Am. Chem. Soc.2023, 145, 8550].
de Azevedo Santos L   +3 more
europepmc   +6 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

Hydrogen Bonds

open access: yesMolecules, 2023
The Topical Collection “Hydrogen Bonds” is a continuation of the previous Special Issue “Intramolecular Hydrogen Bonding 2021” [...]
openaire   +3 more sources

N′-(5-Bromo-2-hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazide dihydrate

open access: yesActa Crystallographica Section E, 2008
The title compound, C14H11BrN2O5·2H2O, crystallizes as hydrogen-bonded sheets. The 2-hydroxy group on the benzylidene group forms an intramolecular hydrogen bond to the N atom of the C=N double bond.
Hapipah M. Ali   +4 more
doaj   +1 more source

Ethyl (E)-3-anilino-2-cyano-3-mercaptoacrylate

open access: yesActa Crystallographica Section E, 2008
In the title compound, C12H12N2O2S, there are S—H...N and N—H...O hydrogen-bond interactions. The N—H...O hydrogen bond is bifurcated, with the hydrogen being simultaneously donated to two equivalent O atoms, forming one intra- and one ...
Yong-Qi Qin   +3 more
doaj   +1 more source

Study on the turn structure of polypeptides containing glycine and L-proline

open access: yesJournal of Hebei University of Science and Technology, 2016
The formation of turn structure in peptide chains has direct relations with intramolecular hydrogen bonds, therefore the existence of this bond can be tested to research the turn structure.
Yong ZHANG   +3 more
doaj   +1 more source

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