Shristy Maurya Asked a Question
July 22, 2020 5:53 pmpts 30 pts
Why this compound is anti aromatic.....I think it doesn't have regular conjugation
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  • Suman Kumar Best Answer
    It is anti aromatic. As it has only 4 pi eletron. Boron has only 3 valence electron. So Boron is sp2 hybridized. Vacant p orbital is there.
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    Shristy Maurya
    means due to vacant p orbital it takes part in conjugation ?
  • Dinesh khalmaniya thankyou
    because Boron doesn't have lp in p orbital so over molecule have 4n pi electrons
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    Dinesh khalmaniya
    it's follow every rule to be aromatic such as planar ,cyclic, conjunction. but doesn't have 4n+pi electron. it contains 4n pi electrons so it is antiaromatic
  • Priyanshu kumar
    shristy here conjugation is pi bond - empty p orbital - pi bond
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    Priyanshu kumar
    so 4 pi electrons...Anti aromatic
  • Dinesh khalmaniya
    hope this will help you 🙏🙏🙏
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  • Suman Kumar
    Yes Shristy as it is five membered so it has no choice but to participate in conjugation. Cyclooctatetraene is 8 membered ring so it has flexibility so it becomes non planar
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