Station occupancy of the macrocycle of bistable [2]rotaxanes 1.XB/HB of the triazolium (Trz) and NDI stations in various solvents and in the presence of 1 equiv. of different anions as determined by 1H NMR90.
| Anion | 1.XB | 1.HB | |||||
|---|---|---|---|---|---|---|---|
| Trz | NDI | Δ(A−–PF6−) | Trz | NDI | Δ(A−–PF6−) | ||
| CDCl3 | PF6− | 38% | 62% | — | 76% | 24% | — |
| Cl− | 92% | 8% | 54% | 100% | 0% | 24% | |
| I− | 95% | 5% | 57% | 100% | 0% | 24% | |
| CDCl3/MeOD 4 : 1 | PF6− | 52% | 48% | — | 67% | 33% | — |
| Cl− | 100% | 0% | 48% | 87% | 13% | 20% | |
| I− | 92% | 8% | 40% | 70% | 30% | 3% | |
| CDCl3/MeOD 1 : 1 | PF6− | 33% | 67% | — | 33% | 67% | — |
| Cl− | 48% | 52% | 15% | 49% | 51% | 16% | |
| I− | 63% | 37% | 30% | 36% | 64% | 3% | |