Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N2—H2A⋯Br2i | 0.86 | 2.62 | 3.406 (7) | 154 |
| N2—H2B⋯Br2ii | 0.86 | 2.57 | 3.428 (6) | 173 |
Symmetry codes: (i) 
; (ii) 
.
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