Table 8. Ditopic asymmetric acceptors (X = halogen-bond donor; H = hydrogen-bond donor).
| Crystal structures | Scheme | Codes |
|---|---|---|
| 4/4 |
|
IF4-OH16 |
| IF4-OH2 | ||
| Br-COOH2 | ||
| BrF4-OH2 | ||
| 0 |
|
|
| 0 |
|
|
| 0 |
|
The crystal structures of IF4-COOH16 and IF4-COOH2 were both disordered in such a way that no determination of binding preference of the HB and XB donor moieties could be made.