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| 1. |
Give plausible explanation for each of the following : Why are aliphatic amines stronger bases than aromatic amines ? |
| Answer» Solution :The electron pair on N in aromatic AMINE is delocalised due to resonance with benzene ring. Electron density on N decreases and consequently the basicity of amine falls. In contrast, alkyl group in ALIPHATIC amine is electron repelling (+I). It increases electron density on N and, THEREFORE, increases the basicity of the amine. In other words, aliphatic amines are STRONGER bases than aromatic amines. | |