Crystal solvates and polymorphs of N-(3-methylthio-1,2,4-thiadiazol-5-yl-aminocarbonylmethyl)cytisine

Autor: K. K. Turgunov, B. Tashkhodjave, Kh. M. Shakhidoyatov, A. G. Tojiboev, T. F. Ibragimov, U. S. Makhmudov, V. A. Saprykina
Rok vydání: 2008
Předmět:
Zdroj: Journal of Inclusion Phenomena and Macrocyclic Chemistry. 61:71-76
ISSN: 1573-1111
0923-0750
Popis: A polymorphs, crystallohydrate and crystallosolvates of N-(3-methylthio-1,2,4-thiadiazol-5-yl-aminocarbonylmethyl)cytisine, C16H19N5O2S2, with chloroform, methanol, benzene have been obtained and crystal structures have been determined by the method of single crystal X-ray diffraction. In the investigated crystals N-(3-methylthio-1,2,4-thiadiazol-5-yl-aminocarbonylmethyl)cytisine have taken four types of conformation due to intra-molecular rotations around N–C and C–C bonds. So free rotations in the molecule assisted in formation a different crystallosolvates and polymorphs depending on nature of solvents. The thermal decomposition of the hydrate and methanol solvated crystals was studied by means of a TG-DSC.
Databáze: OpenAIRE