| C20H14O4 | F(000) = 664 |
| Mr = 318.31 | Dx = 1.431 Mg m−3 |
| Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ybc | Cell parameters from 4021 reflections |
| a = 8.290 (3) Å | θ = 3.0–27.5° |
| b = 6.9781 (19) Å | µ = 0.1 mm−1 |
| c = 25.779 (8) Å | T = 223 K |
| β = 97.883 (1)° | Prism, brown |
| V = 1477.2 (8) Å3 | 0.5 × 0.1 × 0.05 mm |
| Z = 4 |
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