Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C20H28O4 |
| M r | 332.42 |
| Crystal system, space group | Monoclinic, P21 |
| Temperature (K) | 296 |
| a, b, c (Å) | 10.2570 (18), 7.6151 (13), 11.503 (2) |
| β (°) | 101.110 (3) |
| V (Å3) | 881.6 (3) |
| Z | 2 |
| Radiation type | Mo Kα |
| μ (mm−1) | 0.09 |
| Crystal size (mm) | 0.15 × 0.12 × 0.10 |
| Data collection | |
| Diffractometer | Bruker APEXII CCD |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 6669, 3463, 3163 |
| R int | 0.024 |
| (sin θ/λ)max (Å−1) | 0.617 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.030, 0.083, 1.03 |
| No. of reflections | 3319 |
| No. of parameters | 225 |
| No. of restraints | 1 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 0.18, −0.11 |
| Absolute structure | Flack x determined using 1341 quotients [(I +) − (I −)]/[(I +) + (I −)] (Parsons et al., 2013 ▸) |
| Absolute structure parameter | 0.2 (3) |