Table 1. Formation Constants and Binding Strain of Nanoring-Dimer Complexesa.
| porphyrin host | Kf, M–1 | ΔGstrain, kJ mol–1 |
|---|---|---|
| l-P2 | (1.7 ± 0.3) × 108 | 0 |
| c-P6 | (2.6 ± 0.5) × 107 | 4.60 ± 0.71 |
| c-P8 | (7.8 ± 1.6) × 107 | 1.87 ± 0.72 |
| c-P10 | (1.3 ± 0.3) × 108 | 0.67 ± 0.73 |
| c-P12 | (1.5 ± 0.3) × 108 | 0.30 ± 0.73 |
Errors estimated from at least two replicates. See the Supporting Information for calculation of Kf.