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Question

For the following compound :


Choose the correct statement :

A
Nitrogen 1 is the most basic.
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B
Nitrogen 2 is the most basic.
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C
Nitrogen 3 is the most basic.
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D
All nitrogens are equally basic.
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Solution

The correct option is C Nitrogen 3 is the most basic.
Lone pair on nitrogen 1 and nitrogen 2 are delocalised, i.e. involved in resonance as shown. More the delocalisation, less is the basicity.


Lone pair on nitrogen 3 is not involved in conjugation and is most available for donation.
Hence Nitrogen 3 is the most basic.

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