Results 11 to 20 of about 2,615,661 (354)

Hydrogen bond network connectivity in the electric double layer dominates the kinetic pH effect in hydrogen electrocatalysis on Pt

open access: yesNature Catalysis, 2022
The origin of the large kinetic pH effect in hydrogen electrocatalysis, that is, the approximately two orders of magnitude decrease in reaction kinetics when moving from acid to alkaline, remains far from having a consensus.
Peng Li   +6 more
semanticscholar   +1 more source

A versatile hydrogel network–repairing strategy achieved by the covalent-like hydrogen bond interaction

open access: yesScience Advances, 2022
Hydrogen bond engineering is widely exploited to impart stretchability, toughness, and self-healing capability to hydrogels. However, the enhancement effect of conventional hydrogen bonds is severely limited by their weak interaction strength. In nature,
Zilong Han   +5 more
semanticscholar   +1 more source

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

open access: yesNature Communications, 2021
Construction of Z-scheme heterostructure is of great significance for realizing efficient photocatalytic water splitting. However, the conscious modulation of Z-scheme charge transfer is still a great challenge. Herein, interfacial Mo-S bond and internal
Xuehua Wang   +5 more
semanticscholar   +1 more source

Hydrogen bond design principles

open access: yesWiley Interdisciplinary Reviews. Computational Molecular Science, 2020
Hydrogen bonding principles are at the core of supramolecular design. This overview features a discussion relating molecular structure to hydrogen bond strengths, highlighting the following electronic effects on hydrogen bonding: electronegativity ...
L. Karas   +3 more
semanticscholar   +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

A Spectroscopic Overview of Intramolecular Hydrogen Bonds of NH…O,S,N Type

open access: yesMolecules, 2021
Intramolecular NH…O,S,N interactions in non-tautomeric systems are reviewed in a broad range of compounds covering a variety of NH donors and hydrogen bond acceptors. 1H chemical shifts of NH donors are good tools to study intramolecular hydrogen bonding.
Poul Erik Hansen
doaj   +1 more source

(E)-4-Hydroxy-N′-(2-hydroxy-4-methoxybenzylidene)benzohydrazide N,N-dimethylformamide solvate

open access: yesActa Crystallographica Section E, 2009
The Schiff base molecule of the title compound, C15H14N2O4·C3H7NO, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is nearly planar (r.m.s. deviation 0.20 Å).
Nooraziah Mohd Lair   +2 more
doaj   +1 more source

Structures of disodium hydrogen citrate monohydrate, Na2HC6H5O7(H2O), and diammonium sodium citrate, (NH4)2NaC6H5O7, from powder diffraction data

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
The crystal structures of disodium hydrogen citrate monohydrate, Na2HC6H5O7(H2O), and diammonium sodium citrate, (NH4)2NaC6H5O7, have been solved and refined using laboratory X-ray powder diffraction data, and optimized using density functional ...
Jerry Hong   +3 more
doaj   +1 more source

The Nature of Hydrogen Bonds: A Delineation of the Role of Different Energy Components on Hydrogen Bond Strengths and Lengths

open access: yesChemistry - An Asian Journal, 2019
Hydrogen bonds are a complex interplay between different energy components, and their nature is still subject of an ongoing debate. In this minireview, we therefore provide an overview of the different perspectives on hydrogen bonding.
Stephanie C. C. van der Lubbe   +1 more
semanticscholar   +1 more source

Crystal structure of 3-[({2-[bis(2-hydroxybenzyl)amino]ethyl}(2-hydroxybenzyl)amino)methyl]-2-hydroxy-5-methylbenzaldehyde

open access: yesActa Crystallographica Section E, 2014
The non-symmetric title molecule, C32H34N2O5, is based on a tetrasubstituted ethylenediamine backbone. The molecular structure consists of three hydroxybenzyl groups and one 2-hydroxy-5-methylbenzaldehyde group bonded to the N atoms of the diamine unit ...
Alexandra S. Fonseca   +1 more
doaj   +1 more source

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