| C13H8ClN3O6 | F(000) = 688 |
| Mr = 337.67 | Dx = 1.643 Mg m−3 |
| Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
| a = 9.9103 (4) Å | Cell parameters from 2013 reflections |
| b = 12.5791 (4) Å | θ = 2.5–25.0° |
| c = 10.9772 (5) Å | µ = 0.32 mm−1 |
| β = 94.183 (2)° | T = 293 K |
| V = 1364.80 (9) Å3 | Block, yellow |
| Z = 4 | 0.35 × 0.30 × 0.25 mm |