N′-(2,3-Dimethoxybenzylidene)-2,4-dihydroxybenzohydrazide

Abstract

In the title compound, C16H16N2O5, the dihedral angle between the two benzene rings is 8.5 (3)° and the molecule adopts an E configuration with respect to the C=N bond. There is an intramolecular N—H...O hydrogen bond in the molecule, which generates an S(6) ring. In the crystal, molecules are linked through intermolecular O—H...O hydrogen bonds, forming layers parallel to the bc plane.