Results 311 to 320 of about 3,073,614 (389)

Hydrogen bonding with polonium

Physical Chemistry Chemical Physics, 2022
Beyond atomic electronegativity: polonium can form hydrogen bonds even if its electronegativity is less than that of hydrogen. The X–H⋯Po H-bonds are dominated by dispersion and can have H-bond energy comparable to that of conventional H-bonds.
Kiran Devi Tulsiyan, Subhrakant Jena, Juhi Dutta, Himansu S. Biswal   +3 more
openaire   +2 more sources

Hydrogen bonds, improper hydrogen bonds and dihydrogen bonds

Journal of Molecular Structure: THEOCHEM, 2003
Abstract The structures, interaction energies and vibrational spectra of a large number of molecular complexes, formed by binary combination of the covalent hydrides of some of the elements of the first two rows of the periodic table, have been determined by means of ab initio molecular orbital theory at the MP2 level, using the 6-311++G(d,p) basis ...
Maganthran G. Govender, Thomas A. Ford
openaire   +1 more source

Hydrogen Bonded Arrays: The Power of Multiple Hydrogen Bonds

Journal of the American Chemical Society, 2012
Hydrogen bond interactions in small covalent model compounds (i.e., deprotonated polyhydroxy alcohols) were measured by negative ion photoelectron spectroscopy. The experimentally determined vertical and adiabatic electron detachment energies for (HOCH(2)CH(2))(2)CHO(-)(2a), (HOCH(2)CH(2))(3)CO(-) (3a), and (HOCH(2)CH(2)CH(OH)CH(2))(3)CO(-) (4a)reveal ...
Alireza, Shokri, Jacob, Schmidt, Xue-Bin, Wang, Steven R, Kass   +3 more
openaire   +2 more sources

High‐Performance Polymeric Materials through Hydrogen‐Bond Cross‐Linking

Advances in Materials, 2019
It has always been critical to develop high‐performance polymeric materials with exceptional mechanical strength and toughness, thermal stability, and even healable properties for meeting performance requirements in industry.
Pingan Song, Hao Wang
semanticscholar   +1 more source

Hydrogen multicentre bonds

Nature Materials, 2006
The concept of a chemical bond stands out as a major development in the process of understanding how atoms are held together in molecules and solids. Lewis' classical picture of chemical bonds as shared-electron pairs evolved to the quantum-mechanical valence-bond and molecular-orbital theories, and the classification of molecules and solids in terms ...
Anderson, Janotti, Chris G, Van de Walle
openaire   +2 more sources

Hydrogen-bond filtration

Nature Reviews Chemistry, 2020
Self-organization of water molecules around solute ions can affect how they permeate through nanoporous liquid-crystalline membranes.
openaire   +2 more sources

Hydrogen Bonding in Water

Physical Review Letters, 2003
Computer simulations using density functional theory based ab initio path integral molecular dynamics have been carried out to investigate hydrogen bonding in water under ambient conditions. Structural predictions for both H2O and D2O, which include the effects of zero-point energy, thermal motion, and many body polarization effects, are contrasted ...
Bin, Chen, Ivaylo, Ivanov, Michael L, Klein, Michele, Parrinello   +3 more
openaire   +2 more sources

Formation of a Supramolecular Polymeric Adhesive via Water-Participant Hydrogen Bond Formation.

Journal of the American Chemical Society, 2019
A supramolecular polymeric adhesive was prepared from non-viscous, non-polymeric materials by water-participant hydrogen bonds. Pt-pyridine coordination and water-crown ether hydrogen bonding combine to effect the supramolecular polymerization.
Qiao Zhang, Tao Li, Abing Duan, Shengyi Dong, Wanxiang Zhao, P. Stang   +5 more
semanticscholar   +1 more source

Hydrogen bonding in sulfonamides

Journal of Pharmaceutical Sciences, 2001
The hydrogen-bond connectivity in 39 sulfonamide crystal structures has been deciphered and described using graph set notation. The hydrogen-bond connectivity observed is used to gain information on hydrogen-bond preferences of specific donor and acceptor atoms of related sulfonamide molecules.
D A, Adsmond, D J, Grant
openaire   +2 more sources

Hydrogen-Bonded Dihydrotetraazapentacenes

Organic Letters, 2012
Three new members of N-heteropentacenes explored herein have adjacent pyrazine and dihydropyrazine rings at one end of the pentacene backbone. Interesting findings from this study include self-complementary N-H···N H-bonds in the solid state, solvent-dependent UV-vis absorption caused by H-bonding, and new p-type organic semiconductors with field ...
Zikai, He, Danqing, Liu, Renxin, Mao, Qin, Tang, Qian, Miao   +4 more
openaire   +2 more sources