# Explain how the following two compounds can have the same conjugate base. Is this conjugate base aromatic?

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anor277 Share
Feb 6, 2018

$\text{When either compound is deprotonated, the same}$ $\text{aromatic anion is generated....}$

What is the Huckel criterion for aromaticity....?

#### Explanation:

The Huckel criterion specifies $4 n + 2 \cdot \pi$ $\text{electrons}$...you have got 2 dienes in the diagram, the which each have $4 \cdot \pi$ $\text{electrons}$. However, if an hydrogen as a proton is abstracted from the ring (which may be easily accomplished) then you gots $6 \cdot \pi$ $\text{electrons}$...which are delocalized around the ring.

And this is a commonly used ligand in organometallic chemistry....

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