Apply 1D infinite ?(?) PiB model to the π-network in butadiene(assume that the molecule is linear and use the values 135 and 154pm for lengths of C=C and C–C bonds).
a) Calculate the wavelength of the radiation that will be absorbedin promoting an electron from HOMO to LUMO in this molecule.Compare this to the experimental value of 217 nm.
b) What does the comparison made suggest to you about estimatingthe length of the π-network by adding bond lengths for thismolecule?
