Shifana Asked a Question
July 22, 2020 5:46 pmpts 30 pts
why cumulenes have planarity while allens does not have?
  • 2 Answer(s)
  • Shares
  • Priyanshu kumar thankyou
    If no. of pi bonds even then non planar if odd then planar
    • cropped765641742753069271.jpg
    Likes(0) Reply(3)
    Priyanshu kumar
    A cumulene is a hydrocarbon with three or more cumulative (consecutive) double bonds.[1] They are analogous to allenes, only having a more extensive chain. The simplest molecule in...
    Show more
  • Dinesh khalmaniya thankyou
    A cumulene is a hydrocarbon with three or more cumulative double bonds. They are analogous to allenes, only having a more extensive chain. allene have two double bonds so it is non...
    Show more
    Likes(0) Reply(1)
    Dinesh khalmaniya
    got it??
  • Dinesh khalmaniya
    hope this will help you 🙏🙏
    Likes(0) Reply(9)
    so non planar molecule show stereoisomeris
  • Suman Kumar
    Remember this trick if double bond comes to even then Compound is non-planar.
    Likes(0) Reply(4)
    Suman Kumar
    And if no. of double bond is odd then Compound will be planar
  • Dinesh khalmaniya
    check it. allene have two double bonds. so if molecule have even doubles bonds are non planar. while cumulese have more than 3 double bonds. so if cumulese have odd double bond tha...
    Show more
    • cropped5591809032432388794.jpg
    • cropped6259391832362725834.jpg
    Likes(0) Reply(2)
    Dinesh khalmaniya
    please accept the answer if you got it 🙏🙏