Research output: Contribution to journal › Article › peer-review
Crystalline form of betulin : polymorphism or pseudopolymorphism? / Drebushchak, T. N.; Mikhailovskaya, A. V.; Drebushchak, V. A. et al.
In: Journal of Structural Chemistry, Vol. 61, No. 8, 01.08.2020, p. 1260-1266.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Crystalline form of betulin
T2 - polymorphism or pseudopolymorphism?
AU - Drebushchak, T. N.
AU - Mikhailovskaya, A. V.
AU - Drebushchak, V. A.
AU - Mikhailenko, M. A.
AU - Myz’, S. A.
AU - Shakhtshneider, T. P.
AU - Kuznetsova, S. A.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - By recrystallization with different solvents as well as decomposition of betulin ethanol solvate at room temperature a new crystalline form of the biologically active compound betulin, namely hemihydrate of betulin, is obtained. By single crystal X-ray diffraction data the crystal structure of hemihydrate of betulin is determined. By powder X-ray thermodiffraction and differential scanning calorimetry it is found that when hemihydrate of betulin is heated to melting, Н2О molecules are removed and solid-phase transformations occur, which are related to the formation of an intermediate crystalline form andan orthorhombic modification of betulin.
AB - By recrystallization with different solvents as well as decomposition of betulin ethanol solvate at room temperature a new crystalline form of the biologically active compound betulin, namely hemihydrate of betulin, is obtained. By single crystal X-ray diffraction data the crystal structure of hemihydrate of betulin is determined. By powder X-ray thermodiffraction and differential scanning calorimetry it is found that when hemihydrate of betulin is heated to melting, Н2О molecules are removed and solid-phase transformations occur, which are related to the formation of an intermediate crystalline form andan orthorhombic modification of betulin.
KW - betulin
KW - polymorphism
KW - pseudopolymorphism
KW - solid-phase transformations
KW - SOLVATOMORPHS
KW - ISOSTRUCTURALITY
KW - X-RAY
UR - http://www.scopus.com/inward/record.url?scp=85091281374&partnerID=8YFLogxK
U2 - 10.1134/S0022476620080119
DO - 10.1134/S0022476620080119
M3 - Article
AN - SCOPUS:85091281374
VL - 61
SP - 1260
EP - 1266
JO - Journal of Structural Chemistry
JF - Journal of Structural Chemistry
SN - 0022-4766
IS - 8
ER -
ID: 25312584