Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| O1H1N11 | 0.78(7) | 1.97(7) | 2.705(5) | 158(7) |
| C3H3O1i | 0.95 | 2.42 | 3.347(6) | 164 |
| C13H13ABr1ii | 0.99 | 2.89 | 3.833(6) | 159 |
Symmetry codes: (i) 
; (ii) 
.
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