Abstract
The asymmetric unit of the title quinoxaline compound, C(10)H(9)N(3)O(2), contains two crystallographically independent molecules (A and B). The quinoxaline ring systems are essentially planar, with maximum deviations of 0.006 (1) and 0.017 (1) angstrom, respectively, for molecules A and B. In molecule A, the dihedral angle formed between the quinoxaline ring system and nitro group is 10.94 (3)degrees [6.31 (13)degrees for molecule B]. In the crystal, molecules are linked into chains propagating along [001]: one forms zigzag chains linked by C-H center dot center dot center dot O hydrogen bonds, whilst the other forms ladder-like chains by way of C-H center dot center dot center dot N and C-H center dot center dot center dot O hydrogen bonds. The packing is further consolidated by weak pi-pi interactions [range of centroid-centroid distances = 3.5895 (7)-3.6324 (7) angstrom].