Karnan posted an Question
December 12, 2020 • 16:20 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Among the following compounds which non aromatic: a) b) c) d)

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    Priyanshu kumar

    Option D is non aromatic...No complete conjugation. If electron doesn't delocalise then compound is non aromatic.If electron delocalise then on basis of huckel rule you can identify for aromatic and antiaromatic.

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    Dinesh khalmaniya 1 best-answer

    Option D is non aromatic while rest of all aromatic. here due to presence of sp3 carbon in compound D, there is no conjunction in whole ring so it doesn't follow condition of Aromaticity and hence non aromatic.

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    Ashutosh singh best-answer

    D is the non-aromatic compound. Rest all are aromatic. D has no complete resonance, it's neither aromatic nor anti-aromatic. One carbon is sp3 hybridised in D which restricts resonance.

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