(2E)-2-[(2-Hy­droxy-4-meth­oxy­phen­yl)(phen­yl)methyl­idene]-N-phenyl­hydrazinecarboxamide dimethyl­formamide monosolvate

The title compound, C₂₁H₁₉N₃O₃·C₃H₇NO, adopts an E conformation with respect to the azomethine bond and crystallizes in the amide form. The dihedral angle between the rings lined to the C=N bond is 88.60 (12)°. The dimethyl­formamide solvent mol­ecule is disordered over two orientations with site occupancies of 0.684 (3) and 0.316 (3). The two N atoms of the hydrazinecarboxamide group are involved in inter­molecular N—H...O hydrogen bonds in which the dimethyl­formamide O atom acts as acceptor. The structure also features π–π inter­actions, with a centroid–centroid distance of 3.6561 (13) Å. Classical and non-classical intra­molecular O—H...N and C—H...O hydrogen bonds are also present.

(2E)-2-[1-(2-Hy­droxy-4-meth­oxy­phenyl)ethyl­idene]-N-phenyl­hydrazine­carbox­amide monohydrate

The title compound, C₁₆H₁₇N₃O₃·H₂O, exists in the E conformation with respect to the azomethine C=N double bond. While the phenyl ring is almost coplanar with the central hydrazinecarboxamide group [dihedral angle = 14.18 (11)°], it is twisted slightly with respect to the other aromatic ring in the mol­ecule, with a dihedral angle of 22.88 (13)°. The packing is dominated by O—H...O, N—H...O and C—H...O hydrogen-bond inter­actions, forming a three-dimensional supra­molecular structure which is augmented by two types of C—H...π inter­actions. An intramolecular O—H...N interaction is also present in the molecule.