Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C14H14O6 |
| M r | 278.25 |
| Crystal system, space group | Monoclinic, C2/c |
| Temperature (K) | 173 |
| a, b, c (Å) | 16.1298 (17), 7.8773 (8), 13.5247 (14) |
| β (°) | 123.6698 (12) |
| V (Å3) | 1430.2 (3) |
| Z | 4 |
| Radiation type | Mo Kα |
| μ (mm−1) | 0.10 |
| Crystal size (mm) | 0.40 × 0.20 × 0.20 |
| Data collection | |
| Diffractometer | Bruker APEXII CCD area detector |
| Absorption correction | Multi-scan (SADABS; Sheldrick, 1996 ▸) |
| T min, T max | 0.94, 0.98 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 3968, 1625, 1254 |
| R int | 0.038 |
| (sin θ/λ)max (Å−1) | 0.650 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.041, 0.098, 1.03 |
| No. of reflections | 1625 |
| No. of parameters | 91 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 0.40, −0.25 |