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InterviewSolution
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Which of the followig is aromatic?A. `[18]`-annuleneB. `[16]`-annleneC. `[14]`-annuleneD. `[10]`-annulene |
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Answer» Correct Answer - 1 According to the Huckel rule, the `[14],[18]` and `[22]` annulenes `(4n+2` where `n=3,4,5`, respectively have been found to be aromatic `[12],[16] and [24]` annulenes are not aromatic. They are 4n compounds not `4n+2` compounds `[10]` annulenes are expected to be aromatic on the basis of `e^(-)` count, but they are not aromatic as their rings are not planar. |
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