Abstract
The title compound, C21H18N2O3, exists in the E conformation with respect to the azomethane C=N double bond. The central benzene ring is almost coplanar with one of the substituent benzene rings [dihedral angle = 1.74 (5)°] and is approximately orthogonal to the other benzene ring of the molecule [dihedral angle = 86.61 (7)°]. An intramolecular O—H⋯N hydrogen bond occurs. The crystal packing is dominated by N—H⋯O hydrogen bonds, which lead to an infinite chain running parallel to [010].
Highlights
The title compound, C21H18N2O3, exists in the E conformation with respect to the azomethane C N double bond
The crystal packing is dominated by N—H O hydrogen bonds, which lead to an infinite chain running parallel to [010]
Single crystals of the title compound suitable for X-ray analysis were obtained by slow evaporation from its methanolic solution
Summary
H atoms treated by a mixture of independent and constrained refinement max = 0.12 e Å3. Min = 0.14 e Å3 a Department of Applied Chemistry, Cochin University of Science and Technology, Kochi 682 022, India, and bDepartment of Chemistry, Faculty of Science, Eastern. R factor = 0.029; wR factor = 0.082; data-to-parameter ratio = 7.0. The title compound, C21H18N2O3, exists in the E conformation with respect to the azomethane C N double bond. The central benzene ring is almost coplanar with one of the substituent benzene rings [dihedral angle = 1.74 (5) ] and is approximately orthogonal to the other benzene ring of the molecule [dihedral angle = 86.61 (7) ]. The crystal packing is dominated by N—H O hydrogen bonds, which lead to an infinite chain running parallel to [010]
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