2-Hydroxy-3-nitro-N-phenylbenzamide

The asymmetric unit of the title compound, C(13)H(10)N(2)O(4), contains two crystallographically independent molecules. The aromatic rings are oriented at dihedral angles of 24.39 (3) and 7.47 (3)degrees in the two molecules and intramolecular N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds result in the formation of two planar six-membered rings. In the crystal structure, intermolecular O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds link the molecules into chains, forming R(2)(2)(10) ring motifs. Weak pi-pi contacts between the benzene and phenyl rings [centroid-centroid distance = 3.955 (3) angstrom] may further stabilize the structure.