Acta Cryst. (2009). E65, o975  [ doi:10.1107/S160053680901215X ]

N'-(5-Chloro-2-hydroxybenzylidene)-4-hydroxybenzohydrazide

X.-Y. Qiu

Abstract: The title Schiff base compound, C₁₄H₁₁ClN₂O₃, was prepared by the reaction of 5-chlorosalicylaldehyde and 4-hydroxybenzohydrazide. The molecule exists in a trans configuration with respect to the methylidene group. The dihedral angle between the two benzene rings is 40.1 (2)°. An intramolecular O-HN hydrogen bond helps to stabilize the molecular conformation. In the crystal structure, molecules are linked into a three-dimensional network by intermolecular N-HO and O-HO hydrogen bonds.

Online 8 April 2009

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