The title compound (C14H11NO2) is monoclinic with a = 13.579(2), b = 5.297(
1), c = 16.455(2) Angstrom, beta = 98.11(2)degrees, Z = 4, and space group
P2(1)/n. The significant structural features lie in the two carbonyl groups
of the glyoxamide which are oriented antiperiplanar to each other [-163.6(
3)degrees]. The central bond C(1)-C(2) is 1.545(4) Angstrom. The observed c
onformation is stabilized by intramolecular hydrogen bonds.