Table 5.
Globally optimized parameters (± estimated uncertainty) of [C2C1IM]+-based ILs at 293.2 K.
| τc [ns] | |(δ‖ - δ⊥)| [ppm] | A | B | C | D | ||
|---|---|---|---|---|---|---|---|
| (a) [C2C1IM][CH3CO2] | N1 | 0.86±0.03 | 191.68±3.21 | 1.06±0.01 | 0.43±0.04 | 0.14±0.09 | - |
| N3 | 0.81±0.09 | 204.89±12.69 | 1.10±0.01 | 0.29±0.03 | 0.05±0.06 | - | |
| (b) [C2C1IM][CF3CO2] | N1 | 0.23±0.09 | 177.56±35.91 | 1.12±0.04 | 0.36±0.01 | 0.23±0.01 | 0.01±0.02 |
| N3 | 0.22±0.06 | 192.80±23.87 | 1.11±0.03 | 0.20±0.00 | 0.13±0.01 | 0.00±0.01 | |
| (c) [C2C1IM][BF4] | N1 | 0.10±0.04 | 205.44±41.88 | 1.11±0.07 | 0.32±0.00 | 0.24±0.00 | 0.03±0.00 |
| N3 | 0.08±0.02 | 233.71±25.55 | 1.07±0.04 | 0.21±0.00 | 0.18±0.00 | 0.03±0.00 | |
| (d) [C2C1IM][(C2F5)3PF3] | N1 | 0.20±0.10 | 200.20±32.19 | 1.16±0.03 | 0.43±0.02 | 0.31±0.02 | 0.03±0.01 |
| N3 | 0.12±0.02 | 222.01±15.77 | 1.19±0.02 | 0.30±0.00 | 0.31±0.00 | 0.04±0.00 | |
| (e) [C2C1IM][(C2H5)2PO4] | N1 | 2.39±0.32 | 164.63±4.36 | 1.03±0.03 | 1.67±0.85 | 1.06±1.01 | - |
| N3 | 2.49±0.31 | 164.63±3.97 | 1.04±0.04 | 0.78±0.05 | 0.90±1.04 | - | |
| (f) [C2C1IM][C2H5SO4] | N1 | 0.39±0.07 | 229.54±20.73 | 1.10±0.00 | 0.46±0.01 | 0.25±0.03 | - |
| N3 | 0.37±0.00 | 249.95±0.06 | 1.12±0.00 | 0.32±0.01 | 0.20±0.17 | - | |
| (g) [C2C1IM][(C5H11O2)SO4] | N1 | 1.01±0.08 | 173.77±7.87 | 1.06±0.01 | 0.36±0.02 | 0.21±0.08 | - |
| N3 | 1.17±0.06 | 169.61±4.03 | 1.06±0.01 | 0.20±0.01 | 0.05±0.05 | - | |
| (h) [C2C1IM][C6H13SO4] | N1 | 1.41±0.02 | 170.10±0.87 | 1.09±0.01 | 0.69±0.14 | 1.09±0.70 | - |
| N3 | 2.07±0.18 | 156.38±2.41 | 1.06±0.04 | 0.50±0.06 | 0.99±1.01 | - | |
| (i) [C2C1IM][N(CN)2] | N1 | 0.13±0.05 | 204.12±37.60 | 1.09±0.06 | 0.17±0.00 | 0.10±0.00 | - |
| N3 | 0.14±0.04 | 195.04±30.43 | 1.13±0.04 | 0.12±0.00 | 0.07±0.00 | - | |
| (j) [C2C1IM][SCN] | N1 | 0.10±0.02 | 222.69±16.09 | 1.16±0.02 | 0.41±0.01 | 0.30±0.01 | 0.05±0.01 |
| N3 | 0.11±0.02 | 236.22±11.73 | 1.17±0.02 | 0.36±0.01 | 0.27±0.02 | 0.06±0.00 |