Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    16
    ReputationRep:
    Can someone explain how delocalisation of electrons works in

    C=C-C=C-C
    (assume hydrogens)

    and why it would not work in
    C=C-C-C=C

    thanks
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    (Original post by jsmith6131)
    Can someone explain how delocalisation of electrons works in

    C=C-C=C-C
    (assume hydrogens)

    and why it would not work in
    C=C-C-C=C

    thanks
    The p orbitals have to be able to overlap laterally.

    In the first example they can as you have sp2 hybridised carbons adjacent to one another, but in the second example the centre carbon is sp3 hybridised and has no p orbital.
    Offline

    2
    ReputationRep:
    (Original post by jsmith6131)
    Can someone explain how delocalisation of electrons works in

    C=C-C=C-C
    (assume hydrogens)

    and why it would not work in
    C=C-C-C=C


    thanks
    There aren't alternating single and double bonds (non-conjugated) so you can't get an overlap of p-orbitals
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What newspaper do you read/prefer?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.