Molecules of the title compound, C12H10N2O2, are markedly non-planar. There
is an intramolecular N-H . . .O hydrogen bond, and the molecules are linke
d into zigzag chains by a single C-H . . .O hydrogen bond. Comparisons are
made with the supramolecular aggregation in isomeric amino-nitro derivative
s, and in some N-methylnitroanilines.