Question

For the following compound :


Choose the correct statement :

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

Answer 1

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.