Acta Cryst. (2009). E65, o2526 [ doi:10.1107/S1600536809037842 ]
Abstract: The title compound, C20H14N4O2, crystallizes in the orthorhombic system with a crystallographic twofold axis through the N-N bond. The molecule is non-planar and the dihedral angle between two amide groups is 74.9 (2)°. An intramolecular N-HN hydrogen bond is present. In the crystal, the molecules are packed in chains running along the c axis through intermolecular N-HO hydrogen bonds. These chains are further stabilized by intermolecular C-HO hydrogen bonds and C-H interactions leading to the formation of a three-dimensional network.
Online 26 September 2009
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