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Pi bond

Posted: Thu Dec 07, 2017 6:05 pm
by manasa933
According to the VSEPR theory, does a pi bond have localized or de-localized electrons, and why?

Re: Pi bond

Posted: Thu Dec 07, 2017 6:25 pm
by Ishan Saha 1L
it depends on whether the molecule has resonance structures or not. If the pi bond is in a molecule that has resonance, then it is delocalized. If it is in a molecule that does NOT have resonance such that the pi bond is between only two atoms, then it is localized. Hope this Helps!

Re: Pi bond

Posted: Thu Dec 07, 2017 10:46 pm
by Vincent Kim 2I
Essentially if it doesn't matter which atom specifically needs the double bond in the lewis structure, then there is delocalization. For example, benzene, a 6 Carbon ring with three double bonds has delocalized pi bonds because there it doesn't matter which 3 Carbons are double bonded together, so long as they are alternating between single bond and double bond.

Re: Pi bond

Posted: Sat Dec 09, 2017 8:34 pm
by Steven Chau 1B
Generally, the pi-bonds are delocalized if there is resonance since the pi-bond can be moved around without affecting the structure.