Compare the basic strengths of the given comp | vedclass

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(B) The basic strength of amines depends on the availability of the lone pair on the nitrogen atom. $(i)$ $Et_3N$ is a tertiary amine where the lone p

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$ii > i > iii$

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(B) The basic strength of amines depends on the availability of the lone pair on the nitrogen atom. $(i)$ $Et_3N$ is a tertiary amine where the lone pair is available for protonation,but it is less basic than the bicyclic structure (ii) due to steric hindrance and solvation effects. (ii) Quinuclidine is a rigid bicyclic amine where the lone pair is highly available because the structure prevents amine inversion,making it more basic than $Et_3N$. (iii) $1,4-diazabicyclo[2.2.2]octane$ $(DABCO)$ has two nitrogen atoms. One nitrogen atom acts as a base,but the other nitrogen atom exerts an electron-withdrawing $-I$ effect on the first,reducing its basicity compared to quinuclidine. Therefore,the order of basic strength is $(ii) > (i) > (iii)$.

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