Acta Cryst. (2012). E68, o565-o566  [ doi:10.1107/S1600536812003649 ]

4-{4-[(E)-(2-Hydroxyphenyl)iminomethyl]phenoxy}benzene-1,2-dicarbonitrile

H. Tuncer, A. O. Görgülü and T. Hökelek

Abstract: The asymmetric unit of the title compound, C₂₁H₁₃N₃O₂, contains two independent molecules with a similar structure. In one molecule, the central benzene ring is oriented with respect to the terminal benzene rings at 27.23 (7) and 67.96 (7)°; in the other molecule, the corresponding dihedral angles are 12.42 (7) and 64.55 (7)°. In both molecules, there is a short O-HN interaction involving the OH group and the adjacent N atom. In the crystal, there are O-HN hydrogen bonds, and C-HO and N-HO interactions linking the molecules to form a three-dimensional network. - stacking between the pyridine and benzene rings and between the benzene rings [centroid-centroid distances = 3.989 (2), 3.705 (2) and 3.607 (2) Å] may further stabilize the structure. A weak C-H interaction is present in the crystal.

Online 4 February 2012

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