Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C13H13O4i | 0.93 | 2.45 | 3.223(4) | 140 |
| C16H16BS2 | 0.97 | 2.70 | 3.152(4) | 109 |
| C18H18BS1 | 0.97 | 2.38 | 2.930(4) | 116 |
| C22H22AS2 | 0.97 | 2.55 | 3.065(4) | 113 |
Symmetry code: (i) 
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