THE ENTHALPY OF FORMATION OF $C_{3}$
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Date
1993
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Ohio State University
Abstract
The anharmonic nature of the $\nu_{2}$ bending vibration of $C_{3}$ has a large influence on the thermal functions of this molecule. The thermal functions based on four different models of this bending vibration are considered along with mass spectrometric data of $C_{3}$ collected both in our laboratory and in other laboratories. The thermal functions reported by Chase et al. $(1986)^{1}$ are selected as giving the best second and third law enthalpy of formation. The selected enthalpy of formation for $C_{3}$ is $\Delta H_{f,0}=814 \pm 14$ or $\Delta H_{f,298}=823 \pm 14$ kJ/mol. The effects of the different models of the bending vibration on the enthalpy of formation will be presented.
Description
$^{1.}$ M. W. Chase, Jr., C. A. Davies, J. R. Downey, Jr., D. J. Frurip, R. A. McDonald and A. N. Syverud, JANAF Thermochemical Tables, Third edition, (1986).
Author Institution: Department of Chemistry, Texas A\&M University
Author Institution: Department of Chemistry, Texas A\&M University