| Ion I | Ion j | A/kcal/mol | B/ Å-1 | C/kcal/mol/Å-6 |
| Al | Al | 226,514.38 | 2.06 | 15,553.35 |
| Al | F | 1,087,121.56 | 5.48 | 521.21 |
| F | F | 559,920.6 | 5.04 | 151.09 |
| K | Al | 185,526.64 | 5.08 | 49.82 |
| K | F | 51,426.66 | 3.94 | 0 |