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Question


For the given compound number of π electrons that take part in conjugation is/are:

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Solution

The given compound is planar, has conjugation.
In this, only the peripheral pi bonds participate in conjugation and this type of conjugation is called peripheral conjugation. The middle double bond is a non-huckelπ bond and does not take part in conjugation. So, the number ofπ electrons that take part in conjugation are 14.


Total number ofπ e are14 i.e. it follows(4n+2) π e huckel's rule.
and hence it is an aromatic compound.

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