Acta Cryst. (2012). E68, o193  [ doi:10.1107/S1600536811053268 ]

2-[((E)-2-{2-[(E)-2-Hydroxybenzylidene]hydrazinecarbonyl}hydrazinylidene)methyl]phenol

R. Bikas, P. M. Anarjan, S. W. Ng and E. R. T. Tiekink

Abstract: The molecule of the title compound, C₁₅H₁₄N₄O₃, is completed by the application of crystallographic twofold symmetry, with the carbonyl group lying on the rotation axis. The molecule is close to planar: the greatest deviation of a torsion angle from 0° is 7.3 (2)° about the bond linking the phenol ring to the rest of the molecule. An intramolecular O-HN(imine) hydrogen bond is formed in each half of the molecule. The carbonyl O atom is anti with respect to the amine H atoms and this allows for the formation of N-HO(hydroxyl) hydrogen bonds in the crystal, which results in supramolecular layers lying parallel to (100).

Online 21 December 2011

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