Table 3 Normalized donor and acceptor numbers of some polar molecules.
Polar probe | DN' | AN' | DN'/AN' | Character |
|---|---|---|---|---|
Chloroform | 18.600 | 0.000 | 0.000 | Higher acidity |
Ether | 4.900 | 48.000 | 9.796 | Higher basicity |
Methanol | 41.700 | 47.500 | 1.139 | High amphoteric |
Acetone | 8.700 | 42.500 | 4.885 | High amphoteric |
Cyclohexane | 0.141 | 3.520 | 24.965 | Weaker acidity |
Trichloroethylene | 3.313 | 2.500 | 0.755 | Weak amphoteric |
Tetrachloroethylene | 3.020 | 3.100 | 1.026 | Weak amphoteric |
Benzene | 0.600 | 0.250 | 0.417 | Weak acidity and basicity |
