Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C6H6O3 | 0.95 | 2.15 | 2.994(2) | 148 |
| O1H1O2i | 0.84 | 1.83 | 2.6641(16) | 173 |
Symmetry code: (i) 
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