Question

Why 3° amine is less stable than 2° amine ?​

Answer 1

Explanation:

The reason is that a tertiary amine, though has three alkyl groups which can donate electrons to the nitrogen atom but they also cause crowding (also called steric hinderance) around nitrogen.

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Answer 2

Answer:

Explanation:

The reason is that a tertiary amine, though has three alkyl groups which can donate electrons to the nitrogen atom but they also cause crowding (also called steric hinderance) around nitrogen.

By analogy to alkynes, we'd expect the lone pairs in sp-hybridized nitriles to be the most stable and hence the least basic. We'd therefore expect the lone pairs in sp3-hybridized amines to be the least stable and hence the most basic.

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