Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Vapor Pressure of Carbon Monoxide in Condensed Phases
Takako Shinoda
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1969 Volume 42 Issue 10 Pages 2815-2820

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Abstract

A theoretical vapor pressure equation of the form logP+(3⁄2)logT=a+bT for a diatomic molecule was applied to carbon monoxide in condensed phases. The two parameters in the equation determined from experimental vapor pressure data were used to obtain values of the static lattice energy E0, the zero point energy Ez, the geometric mean frequency ωg and the mean frequency of molecular rotation ωR in the respective phases by the information of lattice vibrations at low temperatures. From the mean values of molecular rotation frequencies, the hights of the potential barrier for hindered rotations were estimated to be 360, 230±10 and 110 cal/mol respectively.

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