Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C20H19N3O2 |
| M r | 333.38 |
| Crystal system, space group | Monoclinic, P21/n |
| Temperature (K) | 296 |
| a, b, c () | 11.8549(4), 11.6070(5), 13.1591(5) |
| () | 107.425(3) |
| V (3) | 1727.60(12) |
| Z | 4 |
| Radiation type | Mo K |
| (mm1) | 0.09 |
| Crystal size (mm) | 0.80 0.57 0.10 |
| Data collection | |
| Diffractometer | Stoe IPDS 2 |
| Absorption correction | Integration (X-RED32; Stoe Cie, 2002 ▸) |
| T min, T max | 0.935, 0.991 |
| No. of measured, independent and observed [I > 2(I)] reflections | 25592, 3584, 2772 |
| R int | 0.056 |
| (sin /)max (1) | 0.628 |
| Refinement | |
| R[F 2 > 2(F 2)], wR(F 2), S | 0.050, 0.126, 1.07 |
| No. of reflections | 3584 |
| No. of parameters | 231 |
| No. of restraints | 1 |
| H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
| max, min (e 3) | 0.17, 0.16 |