Table 2. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C1H1O1 | 0.95 | 2.40 | 2.999(7) | 121 |
| C4H4O4i | 0.95 | 2.58 | 3.281(6) | 131 |
| C17H17O3 | 0.95 | 2.45 | 3.034(6) | 120 |
| C17H17Br1ii | 0.95 | 2.87 | 3.693(6) | 145 |
Symmetry codes: (i) 
; (ii) 
.
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