Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C6H6AO1i | 0.97 | 2.46 | 3.334(2) | 150 |
| C6H6BO1ii | 0.97 | 2.57 | 3.313(2) | 134 |
| C8H8O3ii | 0.93 | 2.50 | 3.251(2) | 138 |
Symmetry codes: (i) 
; (ii) 
.
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