Table 1.
cation | anion | host 1a,b max. dia. (nm) | host 2a,b max. dia. (nm) | n-mer aggregateb # (for host 2) |
Li+ | F− | –c | –c | |
Cl− | 2.1 ± 0.0 | 2.1 ± 0.1 | ||
Br− | 2.1 ± 0.2 | 2.5 ± 0.0 | 1.7 ± 0.0 | |
I− | 2.0 ± 0.0 | 14.3 ± 0.5d | 314 ± 32d | |
Na+ | F− | 1.8 ± 0.1 | 1.8 ± 0.3 | |
Cl− | 2.0 ± 0.2 | 2.1 ± 0.1 | ||
Br− | 1.8 ± 0.0 | 2.6 ± 0.1 | 1.8 ± 0.1 | |
I− | 2.0 ± 0.1 | 18.6 ± 3.1d | 764 ± 260d | |
K+ | F− | 2.1 ± 0.4 | 2.0 ± 0.1 | |
Cl− | 2.1 ± 0.1 | 2.0 ± 0.0 | ||
Br− | 2.1 ± 0.1 | 2.4 ± 0.1 | 1.4 ± 0.1 | |
I− | 2.2 ± 0.3 | 11.6 ± 0.8 | 170 ± 37 | |
Cs+ | F− | 1.9 ± 0.0 | 2.0 ± 0.3 | |
Cl− | 2.0 ± 0.1 | 2.0 ± 0.0 | ||
Br− | 1.9 ± 0.1 | 2.4 ± 0.0 | 1.5 ± 0.0 | |
I− | 1.9 ± 0.1 | 11.9 ± 0.2 | 180 ± 10 |
aDetermination of the maximum hydrodynamic diameter (max. dia.) was made regardless of the salt concentration at which the maximum size occurred. In the event of a bimodal distribution, the mode that accounted for >10% of the total distribution and had the largest diameter was used to determine max. dia. bValues are the average of two datasets. cFor solubility reasons titrations with LiF were not performed. dValues are the average of three or more datasets.