N'-(3,5-Dichloro-2-hy-droxy-benzyl-idene)-4-nitro-benzohydrazide methanol solvate

Crystal structure of 4-bromo-N′-[3,5-dichloro-2-hydroxyphenyl)methylidene]benzohydrazide methanol solvate, C15H13BrCl2N2O3

C15H13BrCl2N2O3, monoclinic, P21/c (no. 14), a = 7.4135(4) Å, b = 13.3008(8) Å, c = 16.9956(7) Å, β = 104.445(2)°, V = 1622.88(15) Å3, Z = 4, R gt (F) = 0.0380, wR ref (F 2) = 0.1031, T = 150(2) K.

N′-(2-Methoxybenzylidene)-4-nitrobenzohydrazide

The mol­ecule of the title compound, C₁₅H₁₃N₃O₄, adopts an E configuration with respect to the C=N bond. The dihedral angle between the two benzene rings is 6.0 (3)°. In the crystal, mol­ecules are linked through inter­molecular N—H⋯O hydrogen bonds to form chains along the c axis.

3-Chloro-N'-(3-eth-oxy-2-hy-droxy-benzyl-idene)benzohydrazide monohydrate

In the title compound, C(16)H(15)ClN(2)O(3)·H(2)O, the water mol-ecule is linked to the Schiff base mol-ecule via an O-H⋯O hydrogen bond. In the Schiff base mol-ecule, an intramolecular O-H⋯N hydrogen bond occurs and the dihedral angle between the two benzene rings is 20.5 (5)°. In the crystal, the Schiff base and water mol-ecules are linked by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, forming layers in the ab plane.