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Homework Help: Polyene and partcile in a box

  1. Feb 16, 2012 #1
    1. The problem statement, all variables and given/known data

    Consider a polyene consisting of N double bonds and assume the length of the box in which the π electrons are confined is Na, where a is a suitable lenght.

    What would the lenght for hexatriene be? You will need to choose a value for a, and should justify your choice.

    Hexatriene has 3 double bonds and 2 single bonds.

    3. The attempt at a solution

    The only thing I can think of us: doing avarage of lenght of c-c and c=c bonds, multiplying it by the number of double bonds and then by 2?

    Lenght= N*2*BL BL= bond lenght
    though you don't really have 2 time the number of double bonds.. that's what is messing me up.

    hence a=2BL ?
  2. jcsd
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