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Q.
Which among the following is a non-benzenoid aromatic compound?
KVPYKVPY 2017Organic Chemistry – Some Basic Principles and Techniques
Solution:
Non-benzenoid aromatic compounds are those compounds which do not have benzene ring. They exhibit aromaticity due to alternate $\pi$ bonds in the molecule. The structure of compounds given in options are as follows :
Thus, thiophene is a non benzenoid compound