November 24, 2024, 07:30:11 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: About benzene & cyclohexatriene!  (Read 5953 times)

0 Members and 1 Guest are viewing this topic.

Offline Winga

  • Chemist
  • Full Member
  • *
  • Posts: 510
  • Mole Snacks: +39/-10
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)?
Logged

Offline Mitch

  • General Chemist
  • Administrator
  • Sr. Member
  • *
  • Posts: 5298
  • Mole Snacks: +376/-3
  • Gender: Male
  • "I bring you peace." -Mr. Burns
    • Chemistry Blog
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.
Logged
Most Common Suggestions I Make on the Forums.
1. Start by writing a balanced chemical equation.
2. Don't confuse thermodynamic stability with chemical reactivity.
3. Forum Supports LaTex

Offline Donaldson Tan

  • Editor, New Asia Republic
  • Retired Staff
  • Sr. Member
  • *
  • Posts: 3177
  • Mole Snacks: +261/-13
  • Gender: Male
    • New Asia Republic
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.
Logged
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

Offline Winga

  • Chemist
  • Full Member
  • *
  • Posts: 510
  • Mole Snacks: +39/-10
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.
Logged

Demotivator

  • Guest
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 »
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links