(E,E)-N′-{4-[(2-Benzoyl­hydrazin-1-yl­idene)meth­yl]benzyl­idene}benzo­hydrazide

In the title compound, C₂₂H₁₈N₄O₂, the mol­ecules lie across an inversion centre. The dihedral angle between the mean planes of the central and terminal benzene rings is 66.03 (2)°. The mol­ecule displays trans and anti conformations about the C=N and N—N bonds, respectively. In the crystal, N—H...O hydrogen bonds, with the O atoms of C=O groups acting as acceptors, link the mol­ecules into a chain along [101].

(E)-4-Hy­droxy-N′-(2-hy­droxy-5-iodo­benzyl­idene)benzohydrazide methanol monosolvate

In the title compound, C₁₄H₁₁IN₂O₃·CH₄O, the dihedral angle between the benzene rings is 33.2 (3)°. The mol­ecule displays trans and anti conformations about the C=N and N—N bonds, respectively. There is an intra­molecular O—H...N(azomethine) hydrogen bond. Inter­molecular N—H...O and O—H...O hydrogen bonds consolidate mol­ecules into a three-dimensional architecture.