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Sourav posted an Question
August 27, 2020 • 02:46 am 30 points
  • IIT JAM
  • Chemistry (CY)

Confused btw 2 and 3

What will be the order of rotation barriers about C-N bond among these compounds? ) CH-CH-NH, ) NHH (1) CH NH, (a) I> I1> I (b)IIII> I (d) III>I> Ir Tunareoninaation

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    Dinesh khalmaniya 1 Best Answer

    option B

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    in compound I purly single bond is present so freely rotation

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    in II and III resonance is present so restricted rotation.

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    in II cross resonance is present so partial double bond characters less between C-N is less than III

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    so III have more rotation barrior than II

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    overall order of rotation barrior is III>II>I

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