Acta Cryst. (2008). E64, o1785  [ doi:10.1107/S1600536808026032 ]

Zwitterionic 6-methyl-2-oxo-3-[1-(ureidoiminio)ethyl]-2H-pyran-4-olate monohydrate

A. Djedouani, S. Boufas, M. Allain, G. Bouet and M. Khan

Abstract: The title compound, C₉H₁₁N₃O₄·H₂O, was prepared by the reaction of dehydroacetic acid and semicarbazide hydrochloride. It crystallizes in a zwitterionic form with cationic iminium and anionic enolate groups. In the crystal structure, the almost planar molecules are held together by N-HO, O-HO and C-HO hydrogen bonds, some of them involving the water molecules.

Online 20 August 2008

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