Acta Crystallographica Section E

Volume 67, Part 6 (June 2011)

organic compounds

 

2-[(E)-(2,4-Dihydroxybenzylidene)azaniumyl]-3-phenylpropanoate

H. Bahron, F. M. Fadzel, K. Kassim, M. Hemamalini and H.-K. Fun

Abstract: The title compound, C₁₆H₁₅NO₄, exists as a zwitterion in the solid state, with the carboxylic acid group being deprotonated and the imine N atom being protonated. The molecule adopts an E configuration about the C=N double bond. The dihedral angle between the benzene rings is 46.34 (4)°. An intramolecular N-HO hydrogen bond generates an S(6) ring motif. In the crystal, adjacent molecules are connected by intermolecular O-HO and C-HO hydrogen bonds, forming supramolecular ribbons along the a axis.

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