THERMODYNAMIC PROPERTIES OF ORGANIC DERIVATIVES OF THE LIGHTER ELEMENTS.
Annual technical summary rept. 1 Mar 67-1 Mar 68,
BUREAU OF MINES BARTLESVILLE OKLA PETROLEUM RESEARCH CENTER
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Continued thermochemical research was carried out on ethylenimine as a substance which showed high ring strain and as the parent compound of possible derivatives containing the ethylenimine ring which might show promise as high energy fuels. Programs of thermochemical research on aliphatic diamines were continued in order to better define the C-N thermochemical bond energy. Determinations of the state properties of the fluorocarbons were continued as a means for deriving their intermolecular energies. Results for ethylenimine include thermodynamic functions in the ideal gas state to 1500K calculated from spectroscopic parameters vapor pressure measurements and derived enthalpies of vaporization. Research on the aliphatic diamines included enthalpies of combustion and formation, the C-N thermochemical bond energy, low-temperature heat capacities, third-law entropies, vapor pressures, and enthalpies of vaporization. Research on the state properties and intermolecular energies of fluorine compounds includes correlated values of the vapor pressure of hexafluorobenzene up to the critical, second and third virial coefficients of hexafluoroethane, and reduction of the P-V-T values for hexafluoroethane to standard data forms. Author
- Physical Chemistry