Acta Cryst. (2005). E61, o2076-o2078  [ doi:10.1107/S1600536805017733 ]

(Z)-6-{[1,3-Dihydroxy-2-(hydroxymethyl)propan-2-ylamino]methylene}-4-[(E)-(4-ethylphenyl)diazenyl]cyclohexa-2,4-dienone

O. Sahin, C. Albayrak, M. Odabasoglu and O. Büyükgüngör

Abstract: The title compound, C₁₉H₂₃N₃O₄, adopts the keto-amine tautomeric form, with the H atom located on N rather than on O. This H atom is involved in a strong intramolecular hydrogen bond. The configuration around the azo N=N double bond is trans and the dihedral angle between the two aromatic rings is 8.94  (2)°. The molecules, with intramolecular N-HO hydrogen bonding, are linked by intermolecular O-HO hydrogen bonds, forming a three-dimensional network.

Online 17 June 2005

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