The results of fitting the data of Fig. 6 to eqn (13). All data are globally fit to eqn (13), sharing the parameter RTΔn, among all fits. The R2 is the coefficient of determination for the global fit to each set of data.
| Anion | Binding constant K sharing RTΔn = 13 ± 2(kJ mol−1) | Binding constant K of the anions to polypeptide backbone moieties as reported by Cremer and co-workers | R 2 |
|---|---|---|---|
| SCN− | 2.2 ± 0.5 (M)−1 | 4 (ref. 46) and 2.6 (ref. 47) (M)−1 | 0.996 |
| I− | 1.1 ± 0.2 (M)−1 | 1.5 (ref. 46) (M)−1 | 0.997 |
| Br− | 0.54 ± 0.09 (M)−1 | Less than 1 (ref. 46) (M)−1 | 0.930 |