3-Hydroxy-6-[(4-hydroxyphenylamino)methylene]cyclohexa-2,4-dienone and 2-hydroxy-6-[(4-hydroxyphenylamino)methylene]cyclohexa-2,4-dienone

Authors: Koşar, Başak; Büyükgüngör, Orhan; Albayrak, Çiğdem; Odabaşoğlu, Mustafa

Source: Acta Crystallographica Section C, Volume 60, Number 6, June 2004 , pp. o458-o460(3)

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Abstract:

The title compounds, both C₁₃H₁₁NO₃, exist as the keto-amine tautomers, and the formal hydroxyl H atoms, which display strong intramolecular hydrogen bonds, are located on the N atoms. This is a verification of the preference for the keto-amine tautomeric form in the solid state. The 2-hydroxy isomer has two independent molecules, with the molecules linked by intramolecular N—H…O and O—H…O and intermolecular O—H…O hydrogen bonds into three-dimensional networks.

Document Type: Research article

DOI: http://dx.doi.org/10.1107/S0108270104010832

Publication date: 2004-06-01