(E)-N′-(2-Hydroxybenzylidene)-2-(4-isobutylphenyl)propanohydrazide

The title hydrazide compound, C20H24N2O2, exists in a trans configuration with respect to the acyclic C=N bond and an intramolecular O—H⋯N hydrogen bond generates an S(6) ring motif. The mean plane through the formohydrazide unit is essentially planar [maximum deviation = 0.025 (2) Å], and forms dihedral angles of 24.45 (16) and 87.14 (16)° with the two benzene rings. In the crystal structure, intermolecular N—H⋯O and C—H⋯O hydrogen bonds link neighbouring molecules into extended chains along the c axis, which incorporate R 2 2(16) ring motifs. An intermolecular C—H⋯π interaction is also observed.

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