Table 1. Short contact geometry (Å, °).
| X≡Y⋯Br | X≡Y | Y⋯Br | X≡Y⋯Br |
|---|---|---|---|
| C17≡N17⋯Br12i | 1.144 (10) | 3.053 (4) | 131.45 (9) |
| C27≡N27⋯Br32ii | 1.132 (7) | 3.059 (3) | 131.76 (7) |
| N127≡C127⋯Br132ii | 1.147 (6) | 3.141 (4) | 134.01 (8) |
| C37≡N37⋯Br22iii | 1.156 (6) | 3.077 (3) | 130.68 (10) |
| N137≡C137⋯Br122iii | 1.164 (6) | 3.161 (4) | 133.23 (11) |
| C47≡N47⋯Br52ii | 1.146 (6) | 3.072 (3) | 130.95 (9) |
| C57≡N57⋯Br42iii | 1.147 (6) | 3.057 (3) | 131.47 (7) |
| C67≡N67⋯Br62iv | 1.139 (6) | 3.065 (3) | 131.96 (7) |
Symmetry codes: (i) −x, 1 − y, −z; (ii) x, y, −1 + z; (iii) x, y, 1 + z; (iv) 1 − x, 1 − y, 1 − z.