Results 301 to 310 of about 142,108 (350)

Intermolecular Forces in Liquids

Physical Review, 1929
The volume energy of liquids, ${E}_{v}$, is formulated, as in the Born and Land\'e theory of the lattice energy of crystals, in terms of attractive and repulsive forces varying with inverse powers of the distance, or volume, giving ${E}_{v}=\frac{\ensuremath{-}a}{{V}^{m}}\left[1\ensuremath{-}\frac{n}{m}{\left(\frac{{V}_{0}}{V}\right)}^{{n}^{\ensuremath{
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Determination of Intermolecular Forces

The Journal of Chemical Physics, 1965
Some of the basic problems associated with the determination of intermolecular forces are considered.
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Nonadditivity of Intermolecular Forces

1967
Publisher Summary This chapter presents a critical review of certain features of the non-additivity problem, which have recently become of interest. It faces the question on whether the multibody series has convenient properties of convergence. Four-body forces are calculated with the use of an oscillator model for two particular configurations: a ...
J. Stamper, Henry Margenau
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Interatomic and Intermolecular Forces

1979
Ordinary matter is an aggregate of atoms or of molecules. A molecule, in turn, may be defined as a grouping of a limited number of atoms which are strongly bonded together but whose bonds with the atoms of other adjacent molecules are relatively weak. These groups of atoms therefore act as a unit in the constitution of matter.
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Optics and intermolecular forces

Molecular Physics, 1986
The influence of long-range intermolecular forces upon the refractive index and optical rotation of molecular fluids is examined using quantum electrodynamics and many-body theory. An expression for this effect, analogous to the McLachlan formula for the dispersion energy, and involving the molecular polarizability and second hyperpolarizability, is ...
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Chromatography and Intermolecular Forces

Berichte der Bunsengesellschaft für physikalische Chemie, 1973
AbstractVarious chromatographic techniques are outlined which provide simple, rapid, and precise methods for the determination of many thermodynamic and kinetic parameters of great interest to the physical chemist. The paper emphasises the need to pay attention to particular experimental details and to understand the way in which most chromatographic ...
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Intermolecular Forces and Absorption in Solids

The Journal of the Acoustical Society of America, 1960
Published theory of resonance absorption in crystals [L. N. Liebermann, Phys. Rev. 113, 1052 (1959)], while adequate for establishing the absorption mechanism, is not suitable for precise calculations. If the theory could be improved, acoustical absorption measurements could yield intermolecular force constants in solid crystals.
Leonard N. Liebermann, Robert A. Rasmussen   +1 more
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ON THE INTERMOLECULAR FORCE FIELD OF NITRILES

Canadian Journal of Chemistry, 1955
The nature of the intermolecular force field of the nitriles is considered on the basis of the electron orbital structure and charge distribution of the nitrile group. The directional nature of the force field is due to a well-directed lone pair orbital on the N atom, which may be expected to exhibit strong donor properties, and two π-orbitals which ...
F. E. Murray, W. G. Schneider
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The spreading of drops with intermolecular forces

Physics of Fluids, 1994
The spreading of a thin drop of fluid that partially wets a plane surface is calculated. Capillarity, slip, and intermolecular forces are included in the model, and it is shown that a complete solution is possible without having to exclude the vicinity of the contact line and without having to assume the dynamic behavior of the contact angle.
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The Theory of Intermolecular Forces

1996
Abstract There have been many developments in the theory of intermolecular forces over the last twenty years or so that have not so far been collected together in book form. After many years of effort, practical methods have emerged for the accurate calculation of intermolecular interactions by perturbation theory.
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