Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C19H18N4O2 |
| M r | 334.37 |
| Crystal system, space group | Monoclinic, P21/c |
| Temperature (K) | 296 |
| a, b, c (Å) | 13.9787 (9), 21.5654 (12), 11.6625 (8) |
| β (°) | 111.639 (5) |
| V (Å3) | 3268.0 (4) |
| Z | 8 |
| Radiation type | Mo Kα |
| μ (mm−1) | 0.09 |
| Crystal size (mm) | 0.57 × 0.43 × 0.30 |
| Data collection | |
| Diffractometer | Stoe IPDS 2 |
| Absorption correction | Integration (X-RED32; Stoe & Cie, 2002 ▸) |
| T min, T max | 0.959, 0.988 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 18118, 5769, 3357 |
| R int | 0.060 |
| (sin θ/λ)max (Å−1) | 0.596 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.045, 0.104, 0.91 |
| No. of reflections | 5769 |
| No. of parameters | 451 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 0.29, −0.25 |