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Which is better base: pyridine or ammonia?Also compare pyridine,ammonia,trialkyl amine,pyrole and anniline.

Which is better base: pyridine or ammonia?Also compare pyridine,ammonia,trialkyl amine,pyrole and anniline.

Grade:12

1 Answers

Arun
25750 Points
5 years ago
Pyridine > ammonia > triethyl amine.
Reason being, basicity is the donation of electrons. The species which will donate electron easily will be more basic.
Steric hindrance play a role in this. Pyridine is planar molecule and the lone pair of electron are present perpendicular to the plane of molecule. There is no hinderence and hence easy availability.
Ammonia and triethylamine has distorted tetrahedral structure. There will be much more hinderance as compared to pyridine. But as the size of hydrogen is smaller than ethyl group, it will effectively donate electrons.

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