Which of the following compounds is not aromatic?
For a specific to be Aromatic in nature, it must be
1) Planar
2) Cyclic
3) Completely Conjugated
4) Follow huckel role.
Compound (C) is not planar due to interactions while cis - [10]-Annulene is planar and tran s - [10] Annulane is non planar.
Hence, option (3) is correct.
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