| C18H13BrClNO3 | F(000) = 816 |
| Mr = 406.64 | Dx = 1.703 Mg m−3 |
| Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
| a = 7.3185 (4) Å | Cell parameters from 5443 reflections |
| b = 18.4177 (7) Å | θ = 3.0–33.0° |
| c = 11.7870 (5) Å | µ = 2.78 mm−1 |
| β = 93.609 (4)° | T = 173 K |
| V = 1585.62 (13) Å3 | Plate, colourles |
| Z = 4 | 0.44 × 0.23 × 0.12 mm |