Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C16H11BrN2O4 |
| M r | 375.18 |
| Crystal system, space group | Monoclinic, P21/c |
| Temperature (K) | 296 |
| a, b, c (Å) | 8.4726 (3), 23.7748 (8), 8.0833 (3) |
| β (°) | 111.6985 (17) |
| V (Å3) | 1512.88 (9) |
| Z | 4 |
| Radiation type | Mo Kα |
| μ (mm−1) | 2.74 |
| Crystal size (mm) | 0.35 × 0.20 × 0.09 |
| Data collection | |
| Diffractometer | Bruker APEXII CCD |
| Absorption correction | Multi-scan (SADABS; Bruker, 2010 ▸) |
| T min, T max | 0.428, 0.747 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 65083, 6269, 4739 |
| R int | 0.037 |
| (sin θ/λ)max (Å−1) | 0.796 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.035, 0.089, 1.03 |
| No. of reflections | 6269 |
| No. of parameters | 216 |
| H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
| Δρmax, Δρmin (e Å−3) | 0.59, −0.26 |