The structure of 1, 3, 5-hexatriene is shown below. It has delocalized pi molecu

Question

The structure of 1, 3, 5-hexatriene is shown below. It has delocalized pi molecular orbitals that extend through the whole molecule. How many pi molecular orbitals will form? Show how the molecular orbitals form by drawing the atomic orbitals that combine to form the pi molecular orbitals. Arrange the molecular orbitals in order of increasing energy and fill the orbitals with electrons available from the pi system. Label the orbitals as bonding OR anti-bonding. Identify the HOMO and LUMO. Assume that the conjugated system of 1,3,5-hexatriene behaves as a particle-in-a box model. Calculate the wavelength of light needed to excite an electron from the HOMO to LUMO. Assume that the length of the conjugated system is 9 A. Do you expected 1,3, 5-hexatriene to be colored? The structure of 1, 5-hexadiene is shown below. What you expect this molecule to have the same type of nmolecular orbitals as 1, 3, 5-hexatriene? Justify your answer.

Explanation / Answer

The structure of 1, 3, 5-hexatriene is shown below. It has delocalized pi molecu

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