Results 291 to 300 of about 1,266,256 (315)
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Self-diffusion in liquid water
The Journal of Chemical Physics, 1977The behavior of the self-diffusion coefficient in water, along the coexistence curve for −31 °C⩽T⩽350 °C, is explained in terms of local fluctuations of free volume, energy per molecule, and ’’percentage of broken H bond’’ as derived from ir data. Our theoretical expression agrees with the experimental data, within their errors, in the overall range we
RICCI F. P. +2 more
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Multiple Phases of Liquid Water
ChemPhysChem, 2008AbstractThe history of the study of the anomalies of liquid water, from the 17th century up to the present, is reviewed and the current view on the origin of these anomalies is summarized. The hypothesis of the multiple liquid–liquid transitions of water in the supercooled region is consistent with the available experimental and simulation data and ...
Ivan, Brovchenko, Alla, Oleinikova
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On the Photoionization Mechanism of Liquid Water
Berichte der Bunsengesellschaft für physikalische Chemie, 1993AbstractExperimental data on the photoionization of liquid water are reviewed and reanalyzed. It is suggested that, near to the ionization threshold at 6.5 eV and up to about 8 eV, an optical Charge Transfer (CT) mechanism leads to the formation of hydrated electrons with a low quantum yield.
Sander, M., Luther, K., Troe, J.
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Delocalization of Protons in Liquid Water
Science, 2002We find that the vibrational potential of the O-H stretch vibrations of liquid water shows extreme anharmonicity that arises from the O-H ⋯ O hydrogen bond interaction. We observe that already in the second excited state of the O-H stretch vibration, the hydrogen atom becomes delocalized between the oxygen atoms of two neighboring water molecules.
H J, Bakker, H-K, Nienhuys
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Toward a model for liquid water
Journal of Solution Chemistry, 1973A new model is proposed for liquid water. It is obtained by consideration of the two transitions (melting and boiling) which define the liquid phase. These transitions are discussed with the aid of two analogies to well-known phenomena in polymer physical chemistry.
Julian H. Gibbs +3 more
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Liquid water and the origin of life
Origins of life and evolution of the biosphere, 1993Liquid water has many peculiarities which confer special properties. The most important among them probably are the ability to establish hydrogen bonds, a high polarity and a high dielectric constant. In the presence of liquid water, large organic molecules have to manage the conflict between hydrophobic groups and hydrophilic groups.
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Correlated libration in liquid water
The Journal of Chemical PhysicsThe libration spectrum of liquid H2O is resolved into an octupolar twisting libration band at 485 cm−1 and dipolar rocking–wagging libration bands at 707 and 743 cm−1 using polarization analysis of the hyper-Raman scattering (HRS) spectrum. Dipole interactions and orientation correlation over distances less than 2 nm account for the 36 cm−1 splitting ...
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Liquid-liquid equilibria for water-propanol- and water-butanol-chlorocompound systems
The Chemical Engineering Journal, 1983Orlandini M. +3 more
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Signatures of a liquid–liquid transition in an ab initio deep neural network model for water
Proceedings of the National Academy of Sciences of the United States of America, 2020Thomas E Gärtner +2 more
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