Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1W—H1W1⋯Br1 | 0.82 (2) | 2.46 (2) | 3.274 (5) | 173 (8) |
| O1W—H1W2⋯Br2 | 0.83 (2) | 2.58 (3) | 3.395 (6) | 170 (7) |
| O2W—H2W1⋯Br2 | 0.80 (2) | 2.61 (8) | 3.238 (6) | 136 (9) |
| O2W—H2W2⋯Br1 | 0.81 (2) | 2.53 (3) | 3.328 (7) | 168 (10) |
| O3W—H3W1⋯Br4 | 0.81 (2) | 2.62 (3) | 3.417 (6) | 169 (10) |
| O3W—H3W2⋯Br3 | 0.80 (2) | 2.61 (4) | 3.362 (6) | 156 (8) |
| O4W—H4W1⋯Br3 | 0.81 (2) | 2.66 (2) | 3.461 (6) | 170 (8) |
| O4W—H4W2⋯Br4 | 0.81 (2) | 2.58 (4) | 3.327 (5) | 155 (7) |
| N1—H1⋯O1W | 0.91 | 2.44 | 3.317 (8) | 161 |
| N1—H1⋯Br1 | 0.91 | 2.99 | 3.519 (5) | 119 |
| N3—H3⋯Br3i | 0.91 | 2.57 | 3.457 (5) | 166 |
| N5—H5⋯Br4 | 0.91 | 2.53 | 3.432 (5) | 170 |
| N7—H7⋯O2W | 0.91 | 2.40 | 3.257 (9) | 158 |
| N7—H7⋯Br2 | 0.91 | 3.14 | 3.612 (5) | 115 |
Symmetry code: (i) 
.