The two imidazole rings in the title compound, C8H8N6O4. have slightly
different structure parameters, but both are essentially planar; they
are rotated 29.4 degrees about the central C-C bond. The planes of th
e 4-NO2 and 5'-NO2 groups form angles of 2.7 and 6.0 degrees, respecti
vely, with their imidazole rings.