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用AM1方法计算8个对位取代Schiff碱分子的电子结构.结果表明,当对位取代基R1和R2不同时,引起2个苯环(A,B)不同程度的旋转,使分子具有不同的构像;且取代基的吸电子能力愈强,分子的极性愈大.
The electronic structures of eight para-substituted Schiff bases were calculated by the AM1 method. The results showed that when the para substituents R1 and R2 were different, two benzene rings (A and B) were caused to rotate to different extents, Conformation; and the stronger the electron-withdrawing ability of the substituent, the greater the polarity of the molecule.