Results 281 to 290 of about 289,623 (333)
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Science, 1992
The article "Benzene forms hydrogen bonds with water" by S. Suzuki, et al. (14 August., p. 942) represents a major advance in our understanding of their interactions between water and aromatic structures. The authors show that benzene forms hydrogen bonds with water through the π electron system of benzene. Although they did not mention it, their work
Faust, Bruce C., Blake, G. A.
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The article "Benzene forms hydrogen bonds with water" by S. Suzuki, et al. (14 August., p. 942) represents a major advance in our understanding of their interactions between water and aromatic structures. The authors show that benzene forms hydrogen bonds with water through the π electron system of benzene. Although they did not mention it, their work
Faust, Bruce C., Blake, G. A.
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Hydrogen bonds, improper hydrogen bonds and dihydrogen bonds
Journal of Molecular Structure: THEOCHEM, 2003Abstract 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, T.A. Ford
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Physics Bulletin, 1977 P Schuster, G Zundel and C Sandorfy (eds) Amsterdam: North Holland 1976 Vol 1 Theory pp viii + 389 Vol 2 Structure and Spectroscopy pp viii + 391–887 Vol 3 Dynamics, Thermodynamics and Special Systems pp viii + 889–1549 price $173.75 Anyone suffering under the illusion that the hydrogen bond is not of any great significance, and that adequate justice ...
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Hydrogen Bonded Arrays: The Power of Multiple Hydrogen Bonds
Journal of the American Chemical Society, 2012Hydrogen 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 ...
Jacob Schmidt +4 more
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Chemical Physics Letters, 2008
Abstract The concept of the hydrogen bond is a century old but remains youthful because of its vital role in so many branches of science and because of continued advances in experiment, theory and simulation. We discuss the structural and energetic characteristics of normal hydrogen bonds X–H···Y as well as some exceptions to the normal, including ...
Sean A.C. McDowell +2 more
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Abstract The concept of the hydrogen bond is a century old but remains youthful because of its vital role in so many branches of science and because of continued advances in experiment, theory and simulation. We discuss the structural and energetic characteristics of normal hydrogen bonds X–H···Y as well as some exceptions to the normal, including ...
Sean A.C. McDowell +2 more
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American Scientist, 2012
My first encounter with H2 was typical for a boy in the age of chemistry sets that had some zing to them. My set, made by A. C. Gilbert Co., contained some powdered zinc. It had no acids, but it taught you to generate them from chemicals it included (for instance HCl from NaHSO4 and NH4Cl), or—the manual said— you could buy a small quantity from your ...
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My first encounter with H2 was typical for a boy in the age of chemistry sets that had some zing to them. My set, made by A. C. Gilbert Co., contained some powdered zinc. It had no acids, but it taught you to generate them from chemicals it included (for instance HCl from NaHSO4 and NH4Cl), or—the manual said— you could buy a small quantity from your ...
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Hydrogen bonding with polonium
Physical Chemistry Chemical Physics, 2022Beyond 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 +3 more
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Nature Reviews Chemistry, 2020
Self-organization of water molecules around solute ions can affect how they permeate through nanoporous liquid-crystalline membranes.
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Self-organization of water molecules around solute ions can affect how they permeate through nanoporous liquid-crystalline membranes.
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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 ...
Michael L. Klein +3 more
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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 ...
Michael L. Klein +3 more
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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
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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
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