Table 4. Statistical best-fit parameters (×103 cm−1) of the empirical solvatochromic model for C7/C30.
| Kamlet–Taft model | Catalán 4P model | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ν 0 | a | b | s | R 2 | ν 0 | C SA | C SB | C SP | C SdP | R 2 | |
| C7 (abs.) | 23.78 (±0.08) | −0.65 (±0.08) | 0.16 (±0.13) | −1.18 (±0.11) | 0.961 | 23.83 (±0.30) | −0.81 (±0.17) | 0.12 (±0.16) | −0.28 (±0.41) | −0.90 (±0.13) | 0.953 |
| C7 (flu.) | 21.81 (±0.05) | −0.47 (±0.05) | −0.34 (±0.08) | −1.43 (±0.06) | 0.991 | 22.11 (±0.40) | −0.45 (±0.23) | −0.46 (±0.22) | −0.56 (±0.55) | −1.15 (±0.17) | 0.943 |
| C7 (Stokes shift) | 1.97 (±0.05) | −0.15 (±0.06) | 0.46 (±0.09) | 0.26 (±0.08) | 0.887 | 1.69 (±0.15) | −0.30 (±0.09) | 0.55 (±0.08) | 0.34 (±0.21) | 0.24 (±0.07) | 0.926 |
| C30 (abs.) | 25.13 (±0.14) | −0.57 (±0.15) | 0.28 (±0.24) | −1.23 (±0.21) | 0.866 | 23.19 (±0.34) | −0.89 (±0.19) | 0.14 (±0.18) | −1.79 (±0.46) | −0.67 (±0.14) | 0.939 |
| C30 (flu.) | 21.55 (±0.07) | −0.19 (±0.08) | −0.31 (±0.13) | −0.68 (±0.11) | 0.920 | 22.12 (±0.19) | −0.27 (±0.11) | −0.31 (±0.10) | −0.89 (±0.26) | −0.53 (±0.08) | 0.958 |
| C30 (Stokes shift) | 3.59 (±0.08) | −0.39 (±0.09) | 0.59 (±0.14) | −0.55 (±0.11) | 0.812 | 4.07 (±0.26) | −0.62 (±0.15) | 0.45 (±0.14) | −0.91 (±0.36) | −0.14 (±0.11) | 0.840 |