Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| N2H2ABr1i | 0.88 | 2.46 | 3.322(5) | 167 |
| N3H1N3Br2ii | 0.91 | 2.53 | 3.432(5) | 171 |
| N3H2N3Br2iii | 0.91 | 2.42 | 3.287(5) | 160 |
| N3H3N3Br1 | 0.91 | 2.50 | 3.374(5) | 162 |
| C2H2Br2iv | 0.95 | 2.91 | 3.813(6) | 160 |
| C3H3Br1v | 0.95 | 2.85 | 3.752(7) | 160 |
| C8H8Br1i | 0.95 | 2.86 | 3.672(6) | 144 |
| C11H11Br2ii | 0.95 | 2.80 | 3.639(6) | 148 |
Symmetry codes: (i)
; (ii)
; (iii)
; (iv)
; (v)
.