Enthalpies of combustion, vapour pressures, and enthalpies of sublimation of 3-, 5-, 6-, and 8-aminoquinoline

The standard ( p o = 0.1 MPa) molar enthalpies of formation for crystallin 3-, 5-, 6-, and 8-aminoquinoline were derived from the standard molar enthalpies of combustion, in oxygen, at the temperature T = 298.15 K, measured by static-bomb combustion calorimetry; the Knudsen mass-loss effusion techni...

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Bibliographic Details
Published in:The Journal of chemical thermodynamics 1993, Vol.25 (5), p.579-590
Main Authors: da Silva, Manuel A.V.Ribeiro, Matos, M.Agostinha R., Monte, Manuel J.S., Alves, M.Céu B., Vieira, João M.A.P.
Format: Article
Language:English
Subjects:
Chemical thermodynamics
Chemistry
Elements, mineral and organic compounds
Exact sciences and technology
General and physical chemistry
Thermodynamic properties
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Summary:The standard ( p o = 0.1 MPa) molar enthalpies of formation for crystallin 3-, 5-, 6-, and 8-aminoquinoline were derived from the standard molar enthalpies of combustion, in oxygen, at the temperature T = 298.15 K, measured by static-bomb combustion calorimetry; the Knudsen mass-loss effusion technique was used to measure the vapour pressures of the crystals as functions of temperature, and the standard molar enthalpies of sublimation, at the temperature T = 298.15 K, were derived by the Clausius-Clapeyron equation. Direct measurements of the standard molar enthalpies of sublimation, using microcalorimetry, for 3- and 5-aminoquinoline, confirmed the values from the Knudsen technique. [[formula]]
ISSN:0021-9614
1096-3626
DOI:10.1006/jcht.1993.1052