The correct stability order of the following | vedclass

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Question

(A) To determine the stability,we analyze the aromaticity of each species:$1$. Species $p$ is the cyclopropenyl anion. It has $4n$ $\pi$ electrons ($4

Vedclass · Accepted Answer

$q > r > p$

Vedclass · Answer

(A) To determine the stability,we analyze the aromaticity of each species:$1$. Species $p$ is the cyclopropenyl anion. It has $4n$ $\pi$ electrons ($4$ $\pi$ electrons),making it antiaromatic,which is highly unstable.$2$. Species $q$ is the cyclopentadienyl anion. It has $4n+2$ $\pi$ electrons ($6$ $\pi$ electrons),making it aromatic,which is highly stable.$3$. Species $r$ is cyclooctatetraene. It is non-aromatic because it adopts a non-planar tub-shaped conformation to avoid antiaromaticity,making it more stable than antiaromatic species but less stable than aromatic ones.Therefore,the stability order is $q$ (aromatic) $> r$ (non-aromatic) $> p$ (antiaromatic).The correct option is $A$.

The correct stability order of the following species/molecules is:

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