Table 6.
Effect of solvent polarity on molecular properties of betulinic acid
| Medium (dielectric constant) | Chemical hardness (η) | Softness (S) | Chemical potential (μ) | Electronegativity (χ) | Electrophilicity index (ω) |
|---|---|---|---|---|---|
| Gas Phase | 3.219 | 0.311 | −3.086 | 3.086 | 1.479 |
| Carbon tetrachloride (2.2) | 3.240 | 0.309 | −2.989 | 2.989 | 1.379 |
| Chloroform (4.7) | 3.254 | 0.307 | −2.968 | 2.968 | 1.354 |
| n-Octanol (9.9) | 3.221 | 0.310 | −3.020 | 3.020 | 1.416 |
| Acetonitrile (35.7) | 3.282 | 0.305 | −2.962 | 2.962 | 1.336 |
| DMSO (46.8) | 3.282 | 0.305 | −2.961 | 2.961 | 1.336 |
| Water (78.3) | 3.189 | 0.314 | −3.073 | 3.073 | 1.480 |