Acta Cryst. (2004). E60, o1546-o1548  [ doi:10.1107/S1600536804019713 ]

Tiamulin-hydrogen fumarate-methanol (1/1/1)

X.-J. Cao, C.-R. Sun and Y.-J. Pan

Abstract: The structure of the title complex, 6-ethenyldecahydro-5-hydroxy-4,6,9,10-tetramethyl-1-oxo-3a,9-propano-3aH-cyclopentacycloocten-8-yl [2-(diethylammonio)ethylsulfanyl]acetate (E)-3-carboxyprop-2-enoate methanol solvate, C₂₈H₄₈NO₄S⁺·C₄H₃O₄^-·CH₄O, is presented. The cation of the complex consists of an eight-membered ring with boat-chair conformation, a six-membered ring with a chair conformation and a five-membered ring with a twisted conformation. The fumarate anion adopts an E configuration. The methanol molecule is linked to the cation and the anion by O-HO hydrogen bonds. A network of O-HO, N-HO and C-HO intermolecular hydrogen bonds links the molecules, forming a layered structure.

Online 21 August 2004

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