Determine the number of aromatic species amon | vedclass

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Question

(D) To determine if a compound is aromatic,it must satisfy $H$ückel's rule ($4n+2$ $\pi$ electrons),be planar,and have a continuous cyclic conjugation

Vedclass · Accepted Answer

$5$

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(D) To determine if a compound is aromatic,it must satisfy $H$ückel's rule ($4n+2$ $\pi$ electrons),be planar,and have a continuous cyclic conjugation.$1$. Cyclobutadiene: $4$ $\pi$ electrons (anti-aromatic).$2$. Cyclopentadienyl anion: $6$ $\pi$ electrons (aromatic).$3$. Azulene: $10$ $\pi$ electrons (aromatic).$4$. Cyclooctatetraene: Non-planar,$8$ $\pi$ electrons (non-aromatic).$5$. Cyclopropenone: $2$ $\pi$ electrons (aromatic).$6$. Furan: $6$ $\pi$ electrons (aromatic).$7$. Cyclobutene: Not fully conjugated (non-aromatic).$8$. Fulvene derivative: $6$ $\pi$ electrons (aromatic).The aromatic compounds are: Cyclopentadienyl anion,Azulene,Cyclopropenone,Furan,and the Fulvene derivative.Total number of aromatic species = $5$.

Determine the number of aromatic species among the given compounds:

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