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13.14     Give plausible explanation for each of the following:

                    (iii) Why are aliphatic amines stronger bases than aromatic amines?

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Aliphatic amines stronger bases than aromatic amines due to resonance in aromatic base the lone pair of electron of N atom delocalised over the benzene ring, which makes it less available for electron donation. On the other hand, in aliphatic amines(R-NH_{2}), the electron donor group is attached which increase the electron density at N atom. Thus the aliphatic amines are more basic than aromatic amines.

 

 

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