Amines

Question

Why is aniline weaker base than cyclohexylamine?

Answer

In aniline (C6H5NH2), the phenyl group (C6H5) is an electron withdrawing group and therefore decreases electron availability on the nitrogen of - NH2 group and thus makes it a weaker base. In cyclohexylamine, the cyclohexyl group (non-aromatic) is an electron releasing group and thus increases electron density on the nitrogen of - NH2 group and makes it a stronger base than aniline (Inductive effect).


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