Table 3. Experimental details.
| Crystal data | |
| Chemical formula | C19H16N2O4 |
| M r | 336.34 |
| Crystal system, space group | Monoclinic, P21/c |
| Temperature (K) | 150 |
| a, b, c (Å) | 7.0111 (8), 11.0123 (13), 20.493 (2) |
| β (°) | 96.202 (5) |
| V (Å3) | 1573.0 (3) |
| Z | 4 |
| Radiation type | Mo Kα |
| μ (mm−1) | 0.10 |
| Crystal size (mm) | 0.34 × 0.22 × 0.11 |
| Data collection | |
| Diffractometer | Bruker D8 QUEST PHOTON 3 diffractometer |
| Absorption correction | Multi-scan (TWINABS; Sheldrick, 2009 ▸) |
| T min, T max | 0.97, 0.99 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 5201, 5201, 4007 |
| R int | 0.081 |
| (sin θ/λ)max (Å−1) | 0.672 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.079, 0.214, 1.14 |
| No. of reflections | 5201 |
| No. of parameters | 236 |
| No. of restraints | 2 |
| H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
| Δρmax, Δρmin (e Å−3) | 0.54, −0.30 |