Research Article: N′-(3-Eth­oxy-2-hy­droxy­benzyl­idene)-2-hy­droxy-3-methyl­benzohydrazide

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Zhao-Fu Zhu, Li-Juen Shao, Xi-Hai Shen.


The title compound, C17H18N2O4, crystallizes with two independent mol­ecules in the asymmetric unit. The two benzene rings in each mol­ecule make dihedral angles of 7.6 (3) and 3.9 (3)°. Intra­molecular O—H⋯N and O—H⋯O hydrogen bonds are present in each mol­ecule. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into chains propagating in [010]. The are also a number of C—H⋯O and π–π inter­actions present [centroid–centroid distances = 3.874 (4) and 3.904 (3) Å], that result in the formation of a three-dimensional network.

Partial Text

For the crystal 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 ▶).