摘要
Although the dielectric constant (ε) and the permanent dipole moment (μ) of solvents have for a long time been used to describe the polarity of solvents, but they can only describe the nonspecific clectrostatic interactions. In addition, between solute and solvent molecules there are also some specific interactions such as electron pair donor and accepter (EPD/EPA), hydrogen bond donor and accepter (HBD/HBA), etc. In recent years, by means of spectroscopic measurements and other methods, many empirical solvents parameters have been established, such as the Lewis acidity parameter Er(30), donor
