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in Organic Compounds Containing Nitrogen by (80.8k points)
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Pyridine is less basic than triethylamine because

(a) pyridine has aromatic character

(b) nitrogen in pyridine is sp2 hybridised

(c) pyridine is a cyclic system

(d) in pyridine, lone pair of nitrogen is delocalised.

1 Answer

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Best answer

The correct option is: (d) in pyridine, lone pair of nitrogen is delocalised.

Explanation:

Basicity of amines is due to availability of an unshared pair (lone pair) of electrons on nitrogen. This lone pair of electrons is available for the formation of a new bond with a proton or Lewis acid. Pyridine is less basic than triethylamine because lone pair of nitrogen in pyridine is delocalised.

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