C10H5NO4, triclinic, P1 (no. 2), a = 9.2564(8) Å, b = 11.0464(9) Å,c = 14.8016(12) Å, α = 110.132(2)∘, β = 106.157(3)∘,γ 4.770(3) ∘, V = 1337.7(2) Å3, Z = 6, Rgt(F) = 0.0567,wRref (F2) = 0.1797, T = 296.15 K CCDC no.: 2262885