Table 1. Hydrogen-bond geometry (Å, °).
Cg2 is the midpoint of the C12≡C13 bond.
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| Monoclinic form | ||||
| C3—H3⋯O2i | 0.93 | 2.58 | 3.436 (2) | 153 |
| C13—H13⋯O1ii | 0.93 | 2.33 | 3.350 (2) | 173 |
| C11—H11A⋯Cg2iii | 0.97 | 2.91 | 3.740 (4) | 145 |
| C7—H7⋯Cg2iv | 0.93 | 2.87 | 3.703 (4) | 151 |
| Triclinic form | ||||
| C3—H3⋯O2i | 0.93 | 2.49 | 3.409 (4) | 173 |
| C11—H11B⋯O2ii | 0.97 | 2.52 | 3.380 (4) | 149 |
| C13—H13⋯O1iii | 0.93 | 2.44 | 3.340 (5) | 164 |
| C7—H7⋯Cg2v | 0.93 | 2.93 | 3.829 (4) | 162 |
Symmetry codes: monoclinic: (i) −1 − x, 2 − y, 1 − z; (ii) −x, −y, 1 − z; (iii) x, −1 + y, z; (iv) x, 
− y, −
+ z. Triclinic: (i) 2 − x, 1 − y, 1 − z; (ii) 1 − x, 1 − y, 1 − z; (iii) −x, 2 − y, 1 − z; (iv) −x, 2 − y, −z; (v) x, y, −1 + z.