Acta Crystallographica Section E (Dec 2009)
4-Hydroxy-6-[(4-hydroxy-1-oxo-1,2-dihydrophthalazin-6-yl)carbonyl]phthalazin-1(2H)-one
Abstract
In the crystal structure of the title compound, C17H10N4O5, the molecules lie on twofold axes (through the ketone bridge C and O atoms). The dihedral angle between the two phthalazine rings is 52.25 (1)°. In the crystal, intermolecular N—H...O and O—H...O interactions link the molecules.
