Why is the imine (CH3N=CHCH3) a weaker base than the amine ((CH3)2NCH2CH3)?
The nitrogen atom of the imine is sp2 hybridized while the nitrogen atom of the amine is sp3 hybridized
The imine is less sterically hindered
The amine has more R-groups attached to the nitrogen atom
The amine is more stable than the imine