Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C1—H1⋯Br2i | 0.93 | 2.90 | 3.554 (7) | 129 |
| C21—H21⋯Br1ii | 0.93 | 2.79 | 3.582 (8) | 144 |
Symmetry codes: (i) 
; (ii) 
.
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