4-Chloro-N′-(2-hydr­oxy-1-naphthyl­idene)benzohydrazide

The mol­ecule of the title compound, C(18)H(13)ClN(2)O(2), displays a trans configuration with respect to the C=N double bond. The dihedral angle between the benzene and naphthyl ring systems is 6.0 (2)°. An O—H⋯N hydrogen bond is observed in the mol­ecular structure. In the crystal structure, mol­ecules are linked through inter­molecular N—H⋯O hydrogen bonds and π–π stacking inter­actions [centroid–centroid distance = 3.603 (2) Å], forming chains running along the b axis.