Polymorphe Modifikationen und Solvate von Psilocin und Psilocybin
Archiv der Pharmazie January 1, 1976 M. Kuhnert‐brandstätter, Wolfgang Heindl
Three polymorphic modifications of psilocin were obtained, differing in crystallization and melting behavior and in their IR spectra. Modification I melts at 170–173°, modification II at 161°, and modification III always transforms; its melting point could not be determined but is well characterized by its IR spectrum. Psilocybin forms solvates but no polymorphs. After desolvation—from the hydrate at about 100° and from the methanol solvate at about 145°—both solvates yield the same solvent-free form, which melts with decomposition between 210 and 230° depending on conditions.