Polar aprotic solvent: Difference between revisions
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Revision as of 10:09, 30 June 2021
A polar aprotic solvent is a solvent that lacks an acidic proton and is polar. Such solvents lack hydroxyl and amine groups. These solvents do not serve as proton donors in hydrogen bonding, although they can be proton acceptors. Many solvents, including chlorocarbons and hydrocarbons, are classifiable as aprotic, but polar aprotic solvents are of particular interest for their ability to dissolve salts.
| Solvent | Chemical formula | Boiling point | Dielectric constant | Density | Dipole moment (D)
|
|---|---|---|---|---|---|
| Polar aprotic solvents | |||||
| acetone | C3H6O | 56.05 °C | 21.83 | 0.7845 g/cm3 | 2.91 |
| acetonitrile | CH3CN | 81.3 - 82.1 °C | 38.3 | 0.776 g/cm3 | 3.20 |
| dichloromethane | CH2Cl2 | 39.6 °C | 9.08 | 1.3266 g/cm3 | 1.6 |
| dimethylformamide | (CH3)2NCHO | 153 °C | 36.7 | 0.95 g/cm3 | 3.86 |
| dimethylpropyleneurea | (CH3)2C4H6N2O | 246.5 °C | 36.12 | 1.064 g/cm3 | 4.23 |
| dimethylsulfoxide | (CH3)2SO | 189 °C | 46.7 | 1.1 g/cm3 | 3.96 |
| ethyl acetate | C4H8O2 | 77.11°C | 6.02 | 0.902 g/cm3 | 1.88 |
| hexamethylphosphoric triamide | [(CH3)2N]3PO | 232.5 °C | 29.6 | 1.03 g/cm3 | 5.38 |
| tetrahydrofuran | C4H8O | 66 °C | 7.6 | 0.887 g/cm3 | 1.75 |