Table 2.
Binding constants of three crown ethers to benzylammonium chloride in methanol.
| Crown ether | Cavity size | Guest | log K |
| 12-crown-4 | 120–150 pm | BnNH3Cl | 0.80 |
| 15-crown-5 | 170–220 pm | BnNH3Cl | 2.74 |
| 18-crown-6 | 260–320 pm | BnNH3Cl | 4.43 |
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