Which of the following compounds is not aromatic according to Huckel’s rule?

Question

Which of the following compounds is not aromatic according to Huckel’s rule? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

It contains only four π electrons and thus it does not obey Huckel rule. Due to presence of sp3-carbon, the system is not planar. Therefore the system is not aromatic.

Q. Which of the following compounds is not aromatic according to Huckel’s rule?

It contains only four $π$ electrons and thus it does not obey Huckel rule. Due to presence of $s p^{3}$ -carbon, the system is not planar. Therefore the system is not aromatic.