p-Nitrobenzaldehyde Nicotinoylhydrazone Monohydrate

The X-ray analysis revealed that the title compound, C₁₃H₁₀N₄O₃.H₂O, is a practically planar molecule which exists in the keto tautomeric form. The molecules lie parallel to (022) planes and form centrosymmetrically related dimers with possible π interactions. The water molecule bridges the hydrazone molecules of the adjacent stacks through hydrogen bonds and the crystal structure is stabilized by O-H...O, N-H...O and C-H...O hydrogen bonds.

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