Solubility of ILs in various organic solventsa.
| DMSO | MeOH | EtOH | CH3CN | DMK | EtOAc | CH2Cl2 | Et2O | |
|---|---|---|---|---|---|---|---|---|
| IL1 | + | + | + | +++ | +++ | +++ | ++ | − |
| IL2 | + | + | + | +++ | +++ | +++ | ++ | − |
| IL3 | + | − | − | + | + | − | − | − |
| IL4 | + | − | − | − | − | − | − | − |
| IL5 | + | − | − | + | + | − | − | − |
| IL6 | + | − | − | − | − | − | − | − |
| IL7 | + | + | + | ++ | ++ | − | − | − |
| IL8 | + | + | + | − | − | − | − | − |
a
IL1: [(PYR)C4Cl][PF6]; IL2: [(PYR)C5Cl][PF6]; IL3: [PF6][(PYR)C4(MIM)][Cl]; IL4: [PF6][(PYR)C4(PYR)][Cl]; IL5: [PF6][(PYR)C5(MIM)][Cl]; IL6: [PF6][(PYR)C5(PYR)][Cl]; IL7: [(MIM)C2COOH][PF6]; IL8: [(PYR)C2COOH][PF6]. “+++”: 0.1 g ionic liquid was easily dissolved in the solvent (<0.1 mL). “++”: 0.1 g ionic liquid was easily dissolved in the solvent (0.1–1 mL). “+”: 0.1 g ionic liquids was dissolved in the solvent (1–10 mL). “−”: 0.1 g ionic liquid was not dissolved in the solvent (>10 mL).