Table 4. Main Physicochemical Properties of the Four Pure Solventsa.
| solvent | πa | ∑αb | ∑βc |
|---|---|---|---|
| water | 1.09 | 1.17 | 0.47 |
| DMF | 0.88 | 0.00 | 0.74 |
| acetonitrile | 0.75 | 0.07 | 0.32 |
| n-propanol | 0.52 | 0.37 | 0.48 |
πa Polarity of the solvent. ∑αb is the summation of the hydrogen bond donor propensities of the solvent. ∑βc is the summation of the hydrogen bond accept propensities of the solvent.