Enthalpies of combustion, vapour pressures, and enthalpies of sublimation of 2-cyanoquinoline and 3-cyanoquinoline
The standard ( p ∘= 0.1 MPa) molar enthalpies of formation for crystalline 2-cyanoquinoline, 2-CN-C 9H 6N, and 3-cyanoquinoline, 3- CN - C 9H 6N, were derived from the standard molar enthalpies of combustion, in oxygen, at the temperature T= 298.15 K, measured by static bomb-combustion calorimetry;...
Saved in:
Published in | The Journal of chemical thermodynamics Vol. 27; no. 11; pp. 1187 - 1196 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Kidlington
Elsevier Ltd
1995
Elsevier |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The standard (
p
∘= 0.1 MPa) molar enthalpies of formation for crystalline 2-cyanoquinoline, 2-CN-C
9H
6N, and 3-cyanoquinoline, 3- CN - C
9H
6N, 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
T= 298.15 K, were derived by the Clausius-Clapeyron equation. Direct measurements of the standard molar enthalpies of sublimation, using microcalorimetry, for 2-cyanoquinoline and 3-cyanoquinoline confirmed the values from the Knudsen technique. |
---|---|
ISSN: | 0021-9614 1096-3626 |
DOI: | 10.1006/jcht.1995.0123 |