Date Published: May 01, 2009
Publisher: International Union of Crystallography
Author(s): Carlos A. D. Sousa, José E. Rodríguez-Borges, M. Luísa C. Vale, Xerardo Garcia-Mera.
The title compound, C15H13N3O8, comprises two crystallographically independent molecules in the asymmetric unit. In the crystal, intermolecular C—H⋯O hydrogen bonds link the molecules and short C=O⋯π contacts are seen.
For the preparation of the precursor of the title compound, see: Sousa et al. (2008 ▶). For examples of the use of the 3,5dinitrobenzoylation technique for the assignment of structures by X-ray, see: Caamaño et al. (2000 ▶); Fernández et al. (2001 ▶).