Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C11H11BO2i | 0.98 | 2.40 | 3.324(3) | 156 |
| C6H6Cl3ii | 1.00 | 2.73 | 3.519(2) | 136 |
| C12H12ACl2iii | 0.98 | 2.82 | 3.751(3) | 159 |
| C12H12BCl3i | 0.98 | 2.82 | 3.760(3) | 161 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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