4-Dimethyl­amino-N′-(4-nitro­benzyl­idene)benzohydrazide methanol monosolvate

In the title compound, C₁₆H₁₆N₄O₃·CH₃OH, the aromatic rings form a dihedral angle of 0.4 (2)°. The nitro group is twisted from the attached benzene ring by 7.5 (2)°. In the crystal, N—H...O and O—H...O hydrogen bonds link alternating hydrazone and methanol mol­ecules into chains in [100]. The crystal packing exhibits π–π inter­actions between aromatic rings from neighbouring chains [centroid–centroid distances = 3.734 (3) and 3.903 (3) Å].

2-Chloro-N-[1-(4-chloro­phen­yl)-3-cyano-1H-pyrazol-5-yl]acetamide

The title compound, C₁₂H₈Cl₂N₄O, was synthesized by the reaction of 5-amino-1-(4-chloro­phen­yl)-1H-pyrazole-3-carbonitrile and 2-chloro­acetyl chloride. The dihedral angle between the pyrazole and benzene rings is 30.7 (3)°. In the crystal structure, strong N—H...O hydrogen bonds link the mol­ecules into chains along [001]. C—H...N hydrogen bonds are also present.