Acta Cryst. (2011). E67, o1666 [ doi:10.1107/S1600536811022082 ]
Abstract: The title butterfly-shaped molecule, C11H6N2O2, is folded slightly along the O=CC=O line, the dihedral angle between the two parts being 6.42 (3)°. In the crystal, adjacent molecules are linked through C-HO hydrogen bonds into infinite layers parallel to the ac plane. The layers are further connected into a three-dimensional netweork via - interactions formed between pairs of antiparallel arranged molecules, with a centroid-centroid distance between the central six-membered ring and the benzene ring of 3.4349 (9) Å.
Online 18 June 2011
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