For benzene, the total electron energy is E 6 8 and for 1,3,5 hex...

For benzene, the total Ï€-electron energy is EÏ€ = 6Î± + 8Î² and for 1,3,5-hexatriene it...

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Chemistry

For benzene, the total Ï€-electron energy is E_Ï€ = 6Î± +8Î² and for 1,3,5-hexatriene it is E_Ï€ = 6Î± + 6.99Î².
(a) Using Huckel molecular orbital theory, compare the totalÏ€-electron energy of 1,3,5-hexatriene to the energy of a moleculewith 3 localized Ï€-bonds (i.e. 3 ethene molecules). What factorleads to the lower energy of 1,3,5-hexatriene as compared to themolecule with 3 localized Ï€-bonds? Explain.
(b) Explain why the total Ï€-electron energies of benzene and1,3,5-hexatriene are different even though both have 6 carbons and6 Ï€-electrons. Why does benzene have a lower energy?Explain.Â Â

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4.3 Ratings (759 Votes)

the extent of delocalization causes less energetic system or more stabilized system In 135hexatriene the three double bonds are in conjugation Conjugated double bonds See Answer

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