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苯胺和乙酰胺哪个碱性强
更新时间: 2020-10-02 00:00:00  

苯胺碱性大于乙酰胺的碱性。原因是:烷基具有给电子诱导效应;苯基与苯胺中的氮原子有共扼轭作用,分散了氮上的孤对电子;乙酰基上有氧原子,是强吸电子基,并且可以于乙酰基共轭。所以,由于苯环的吸电子能力小于乙酰基,致使苯胺氮的电子云密度大于乙酰胺氮的电子云。氮的电子云密度越大吸引质子的能力就越强,从而碱性就越强。

关键词: 苯胺 哪个 碱性

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