| Crystal data |
| Chemical formula |
C18H26O4
|
|
M
r
|
306.39 |
| Crystal system, space group |
Monoclinic, P21
|
| Temperature (K) |
298 |
|
a, b, c (Å) |
6.2927 (7), 17.9903 (19), 7.2991 (8) |
| β (°) |
95.216 (4) |
|
V (Å3) |
822.89 (16) |
|
Z
|
2 |
| Radiation type |
Cu Kα |
| μ (mm−1) |
0.69 |
| Crystal size (mm) |
0.40 × 0.35 × 0.30 |
| |
| Data collection |
| Diffractometer |
Bruker D8 Venture/Photon 100 CMOS |
| Absorption correction |
Multi-scan (SADABS; Bruker, 2013 ▸) |
|
T
min, T
max
|
0.687, 0.754 |
| No. of measured, independent and observed [I > 2σ(I)] reflections |
27011, 3232, 3135 |
|
R
int
|
0.026 |
| (sin θ/λ)max (Å−1) |
0.618 |
| |
| Refinement |
|
R[F
2 > 2σ(F
2)], wR(F
2), S
|
0.027, 0.071, 1.08 |
| No. of reflections |
3232 |
| No. of parameters |
204 |
| No. of restraints |
1 |
| H-atom treatment |
H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) |
0.13, −0.10 |
| Absolute structure |
Flack x determined using 1475 quotients [(I
+)−(I
−)]/[(I
+)+(I
−)] (Parsons et al., 2013 ▸) |
| Absolute structure parameter |
0.04 (4) |
