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Topic: About benzene & cyclohexatriene!  (Read 5954 times)

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Offline Winga

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About benzene & cyclohexatriene!
« on: November 27, 2004, 01:27:30 AM »
Are the total internal energy in benzene & cyclohexatriene the same?

I mean, some energy of benzene is used as resonanace energy and it gives out less energy in hydrogenation comparing with theoretical cyclohexatriene.
If cyclohexatriene is existed, is the total internal energy of the cyclohexatriene same as the cyclohexatriene's with resonance (cyclohexatriene--->benzene)?
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Offline Mitch

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Re:About benzene & cyclohexatriene!
« Reply #1 on: November 27, 2004, 02:29:43 AM »
Cyclohexatriene has no resonance or it would be called benzene. Triangular phenylene is an example of a cyclohexatriene moiety. Cyclohexatriene obviously would not have any resonace energy.
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Offline Donaldson Tan

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Re:About benzene & cyclohexatriene!
« Reply #2 on: November 27, 2004, 12:38:34 PM »
they have different internal energy. benzene has lower internal energy than cyclohexatriene because of electron delocalisation.
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Offline Winga

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Re:About benzene & cyclohexatriene!
« Reply #3 on: November 27, 2004, 10:48:26 PM »
So, if cyclohexatriene is existed, and I want to convert it into benzene, some energy is released. This energy is used in where? I think the delocalization of e- is spontaneous(no energy is required) if the p-ortbitals of C have efficient overlapping.
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Demotivator

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Re:About benzene & cyclohexatriene!
« Reply #4 on: November 27, 2004, 11:29:26 PM »
"Energy is used where?"
the ennergy is just released as heat.
« Last Edit: November 27, 2004, 11:31:48 PM by Demotivator »
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