Date Published: April 01, 2012
Publisher: International Union of Crystallography
Author(s): Xi-Hai Shen, Li-Juen Shao, Zhao-Fu Zhu, Li-Xue Zhu.
The title compound, C19H23N3O2, was prepared by condensing 4-diethylamino-2-hydroxybenzaldehyde and 4-methylbenzohydrazide in methanol. The asymmetric unit contains two independent molecules in which the two benzene rings make dihedral angles of 30.3 (3) and 18.9 (3)°. Intramolecular O—H⋯N hydrogen bonds are observed in both molecules. The crystal structure is stabilized by N—H⋯O hydrogen bonds, which form chains along the a axis.
For the structures of similar hydrazone compounds, see: Fun et al. (2011 ▶); Horkaew et al. (2011 ▶); Zhi et al. (2011 ▶); Huang & Wu (2010 ▶); Shen et al. (2012 ▶). For standard bond lengths, see: Allen et al. (1987 ▶).