Thermochemistry of Sesquiterpene Lactone 3,4β-Epoxyarglabin

The enthalpies of dissolution of 3,4β-epoxyarglabin C 15 H 18 O 4 are measured via isothermal calorimetry at lactone: 96% ethanol molar ratios of 1: 6000, 1: 12000, 1: 24000 at 298.15 K. The standard enthalpy of dissolution of C 15 H 18 O 4 in 96% ethanol is calculated from the obtained data; the va...

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Veröffentlicht in:	Russian Journal of Physical Chemistry A 2018-02, Vol.92 (2), p.232-234
Hauptverfasser:	Kasenova, Sh. B., Kishkentaeva, A. S., Atazhanova, G. A., Kasenov, B. K., Sagintaeva, Zh. I., Adekenov, S. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemical Thermodynamics and Thermochemistry Chemistry Chemistry and Materials Science Dissolution Enthalpy Ethanol Physical Chemistry Thermochemistry
Online-Zugang:	Volltext
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Zusammenfassung:	The enthalpies of dissolution of 3,4β-epoxyarglabin C 15 H 18 O 4 are measured via isothermal calorimetry at lactone: 96% ethanol molar ratios of 1: 6000, 1: 12000, 1: 24000 at 298.15 K. The standard enthalpy of dissolution of C 15 H 18 O 4 in 96% ethanol is calculated from the obtained data; the value is 40.1 ± 0.4 kJ/mol. The enthalpies of combustion, melting, and formation of 3,4β-epoxyarglabin C 15 H 18 O 4 are estimated by approximate means.
ISSN:	0036-0244 1531-863X
DOI:	10.1134/S0036024418020115