Table 1.
Host | Cl–/M–1 | Cl– ΔG/kcal mol–1 | Br–/M–1 | I–/M–1 |
---|---|---|---|---|
2 | 700b | –3.88 | — | — |
5 | 6700c | –5.21 | 1600b | 150b |
3 | 40700c | –6.28 | — | — |
Anions added as tetrabutylammonium salts in water-saturated CHCl3 or CDCl3 at 298 K. Error is ca. ±10% and the values represent an average of three titrations.
Titrations performed using 1H NMR.
Titrations performed using UV-Vis.