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| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N2—H1N⋯O1 | 0.79 (3) | 2.32 (3) | 2.702 (4) | 111 (3) |
| N2—H1N⋯Br1i | 0.79 (3) | 2.70 (4) | 3.291 (3) | 133 (3) |
| N2—H2N⋯Br1ii | 0.93 (6) | 2.29 (6) | 3.197 (3) | 165 (4) |
| N2—H3N⋯Br1 | 1.02 (4) | 2.26 (4) | 3.284 (3) | 176 (3) |
Symmetry codes: (i) 
; (ii) 
.
