Abstract
There are significant twists in the title compound, C16H15N3O2, as seen in the dihedral angle between the benzene and adjacent but-2-enal group [29.26 (4)°] and between the pyridine ring and amide group [24.79 (6)°]. A twist is also evident around the hydrazine bond [the C—N—N—C torsion angle is −138.25 (13)°]. The conformation about the ethene bond is Z. An intramolecular N—H⋯O hydrogen bond involving the benzoyl O atom and leading to an S(6) motif is formed. Significant delocalization of π-electron density is found in this part of the molecule. In the crystal, helical supramolecular chains aligned along the b axis and mediated by N—H⋯O hydrogen bonds are formed.
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