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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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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   +1 more
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THE INTERMOLECULAR FORCE CONSTANTS OF FLUORINE

, 1953
The intermolecular force constants of gaseous fluorine have been determined from measurements of the second virial coefficients in the region 80–300°K.
D. White, Jih-Heng Hu, H. L. Johnston
semanticscholar   +1 more source

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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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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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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Intermolecular force field and normal vibrations of polyethylene crystals

, 1979
A general expression of wave vector dependent dynamical matrices for calculating the harmonic normal frequencies of molecular crystals, including polymer crystals, has been presented, along with the method of factorization according to the irreducible ...
Masamichi Kobayashi
semanticscholar   +1 more source

Padé approximation methods applied to the intermolecular force series

, 1971
The H(1s)-H+, He-He, H(1s)-H(1s) and H(1s)-H(2s) interactions are considered as model systems for investigating the use of the Pade approximation method in summing the R -1 intermolecular force series. Various Pade approximants and partial sums of the R -
Y. Pan, W. J. Meath
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Intermolecular Forces

1984
Knowledge of the intermolecular potential for simple (i.e. monatomic) molecules has increased greatly in recent years. For polyatomic molecules, on the other hand, such knowledge is still rather meagre, and much more is needed. One needs to know (i) what is the pair potential? (ii) how important are the triplet and other multibody potentials in liquids?
C. G. Gray, K. E. Gubbins
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Design of basis sets for precise intermolecular force computation. Investigation of the He2 potential curve using CEPA‐PNO correlated wavefunctions.

, 1979
Techniques for the systematic improvement of atomic (or molecular) basis sets for precise intermolecular force computations are used to refine the theoretical He2 ground state potential curve. Diagnostic parameters from the most recent experimental study
P. Burton
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