Melting of orthorhombic betulin

Orthorhombic (s.g. P 2 1 2 1 2, a = 28.6145 Å, b = 27.4115 Å, c = 6.9536 Å, V = 5454.1 Å 3 ) betulin (C 30 H 50 O 2 ) was found in this study to melt at 245 °C with the enthalpy of fusion 40.3 J mol −1 . The shape of the peak of melting gives rise to the belief that there are several polymorphs...

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Veröffentlicht in:	Journal of thermal analysis and calorimetry 2013-03, Vol.111 (3), p.2005-2008
Hauptverfasser:	Drebushchak, V. A., Mikhailenko, M. A., Shakhtshneider, Tatyana P., Kuznetsova, Svetlana A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical Chemistry Calorimetry Chemistry Chemistry and Materials Science Enthalpy Hepatitis C Inorganic Chemistry Measurement Science and Instrumentation Melting Melts Physical Chemistry Polymer Sciences Thermal analysis
Online-Zugang:	Volltext
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Zusammenfassung:	Orthorhombic (s.g. P 2 1 2 1 2, a = 28.6145 Å, b = 27.4115 Å, c = 6.9536 Å, V = 5454.1 Å 3 ) betulin (C 30 H 50 O 2 ) was found in this study to melt at 245 °C with the enthalpy of fusion 40.3 J mol −1 . The shape of the peak of melting gives rise to the belief that there are several polymorphs of betulin.
ISSN:	1388-6150 1588-2926 1572-8943
DOI:	10.1007/s10973-012-2235-4