Delocalized Pi-Bonding

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Jasmine Wu 1L
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Joined: Thu Jul 27, 2017 3:00 am
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Delocalized Pi-Bonding

Postby Jasmine Wu 1L » Sun Dec 03, 2017 9:26 pm

What is a delocalized pi-bond, and how do you find them?

Thanks! :)

SPandya1F
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Re: Delocalized Pi-Bonding

Postby SPandya1F » Sun Dec 03, 2017 9:30 pm

A pi bond happens when two sets of electron orbitals involved in the bond overlap. A common example occurs in benzene. They are seen in resonance structures with different locations of double and triple bonds.

Patricia Macalalag 2E
Posts: 53
Joined: Sat Jul 22, 2017 3:00 am

Re: Delocalized Pi-Bonding

Postby Patricia Macalalag 2E » Tue Dec 05, 2017 9:55 pm

It is delocalized because the e- can move around, resulting in resonance structures. This is only seen when a pi-bond is present.

Lauren Seidl 1D
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Joined: Fri Sep 29, 2017 7:06 am

Re: Delocalized Pi-Bonding

Postby Lauren Seidl 1D » Wed Dec 06, 2017 7:00 pm

The easiest way to spot delocalized pi-bonding is in lewis structures that display resonance structures, as the pi-bond can move around and is therefore "delocalized." Just remember delocalized as not being local to one specific point in the structure.

dstemp
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Joined: Fri Sep 29, 2017 7:07 am

Re: Delocalized Pi-Bonding

Postby dstemp » Wed Dec 06, 2017 8:40 pm

So just to be clear, in order for there to be delocalized pi-bonding there must be at least a double bond between two atoms as well as a lone pair on one of the atoms?

Maeve Gallagher 1J
Posts: 56
Joined: Fri Sep 29, 2017 7:07 am

Re: Delocalized Pi-Bonding

Postby Maeve Gallagher 1J » Thu Dec 07, 2017 12:15 pm

For clarification, delocalized pi bonding happens when there is a molecule who's structure has some double and some single bonds, so has a resonance hybrid where each bond has partial double bond character?


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