The Intermolecular Potentials for Some Simple Nonpolar Molecules

Autor:	William E. Rice, Edward A. Mason
Rok vydání:	1954
Předmět:	Chemistry Intermolecular force General Physics and Astronomy Thermodynamics Potential energy Virial theorem Crystal symbols.namesake Viscosity Virial coefficient symbols Circular symmetry Physical and Theoretical Chemistry van der Waals force Atomic physics
Zdroj:	The Journal of Chemical Physics. 22:843-851
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1740200
Popis:	Experimental data on the crystal properties, second virial coefficients, and viscosity coefficients of Ne, A, Kr, Xe, CH4, N2, CO, O2, and CO2 were analyzed for the purpose of obtaining values of the parameters in the exp‐six intermolecular potential, [open phi](r)=e1−6/α[6αeα(1−r/rm)−(rmr)6]. For gases whose molecules are spherical, it was possible to reproduce, with a single set of potential parameters, not only the crystal, second virial, and viscosity data, but also data on other transport properties with fair accuracy. For gases whose molecules deviate appreciably from spherical symmetry it was necessary to choose at least two different sets of potential parameters in order to reproduce different types of properties. Such behavior was taken to indicate the inadequacy of the assumptions, made in the fundamental gas theories, that intermolecular forces are central and that intermolecular collisions are elastic.
Databáze:	OpenAIRE
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