C11H12N4O2, M(r) = 232.24, orthorhombic, Pbca, a = 6.962 (4), b = 13.7
54 (7), c = 22.974 (12) angstrom, V = 2200 (2) angstrom3, Z = 8, D(m)
= 1.40, D(x) = 1.402 Mg m-3 graphite-monochromated Cu Kalpha radiation
, lambda = 1.54178 angstrom, mu = 0.794 mm-1, F(000) = 976, T = 293K,
final R = 0.035 for 1143 unique observed [F greater-than-or-equal-to 4
sigma(F)] reflections. The phenyl ring and the nitro group make angles
of 50.8 and 3.6-degrees, respectively, to the imidazole ring. An inte
rmolecular hydrogen bond exists parallel to the b axis.