Thermal transitions (TC: crystallisation, TG: glass transition, TM: melting) of the investigated ionic liquids including enthalpy ΔHM and entropy ΔSM of melting.
| Ionic liquid | T C/K | T G/K | T M/K | ΔHM/kJ mol−1 | ΔSM/J K−1 mol−1 |
|---|---|---|---|---|---|
| [P(3O1)4]Br | 245.1 ± 1.1 | — | 325.7 ± 1.3 | 34.7 ± 1.8 | 106.5 ± 5.6 |
| [P(3O1)4][NTf2] | — | 190.9 ± 0.9 | — | — | — |
| [P(3O1)4][B(CN)4] | — | 193.0 ± 0.8 | — | — | — |
| [P(3O1)4][BF4] | — | 200.3 ± 1.0 | 279.8 ± 0.4 | 21.9 ± 0.5 | 78.2 ± 1.8 |
| [P(3O1)4][PF6] | 243.4 ± 3.8 | — | 324.6 ± 0.4 | 42.1 ± 0.4 | 129.7 ± 1.1 |
| [P5555]Br | 304.6 ± 0.4 | — | 336.8 ± 0.4 | 10.6 ± 0.6 | 31.5 ± 1.7 |
| [P5555][NTf2] | 294.7 ± 1.0 | — | 318.8 ± 0.2 | 14.8 ± 0.1 | 46.3 ± 0.1 |
| [P5555][B(CN)4] | 312.3 ± 1.0 | — | 382.8 ± 0.3 | 11.1 ± 0.2 | 29.1 ± 0.5 |
| [P5555][BF4] | 323.8 ± 1.9 | — | 358.5 ± 0.2 | 13.3 ± 0.1 | 37.2 ± 0.2 |
| [P5555][PF6] | 322.4 ± 1.5 | — | 344.3 ± 0.2 | 14.7 ± 1.1 | 42.7 ± 3.1 |