delocalized pi bond

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Aishwarya Kosgi 1F
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delocalized pi bond

Postby Aishwarya Kosgi 1F » Sat Nov 28, 2020 3:21 pm

Hi! I was wondering what the difference between a pi bond and a delocalized pi bond is? Thanks!

Faaizah Arshad 1H
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Re: delocalized pi bond

Postby Faaizah Arshad 1H » Sat Nov 28, 2020 3:24 pm

A delocalized pi bond is present in a molecule that has double bonds and also has resonance. For example, CO3 2- would have delocalized pi bonds because the multiple bond character is spread over three oxygen atoms.

Steph Du 1H
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Re: delocalized pi bond

Postby Steph Du 1H » Sat Nov 28, 2020 3:25 pm

You will find delocalized pi bonds in molecules that have resonance. This is because, in resonance, the electrons are delocalized over a pair of atoms, so the pi bond would be a delocalized pi bond.

Giselle Granda 3F
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Re: delocalized pi bond

Postby Giselle Granda 3F » Sat Nov 28, 2020 11:08 pm

Delocalized pi bonds exist when a molecule has resonance, in which say double or triple bonds can be placed in different locations in the Lewis structure. If there is no resonance, there will be no delocalized pi bonds!

Chinyere Okeke 2J
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Re: delocalized pi bond

Postby Chinyere Okeke 2J » Sun Nov 29, 2020 1:39 pm

You get delocalized pi bonds when there is resonance in a structure. This means that the double or triple bonds can be in different positions so the electrons (pi bond) are delocalized around the molecule.

Grace_Remphrey_2J
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Re: delocalized pi bond

Postby Grace_Remphrey_2J » Sun Nov 29, 2020 2:14 pm

Localized electrons exhibit normal behavior, a localized lone pair remains close to one atom, and a localized bond pair travels between two atoms. Resonance hybrids necessarily contain some "abnormal" electrons. In a delocalized pi bond, instead of sticking near one atom, it visits two atoms.

Chinmayi Mutyala 3H
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Re: delocalized pi bond

Postby Chinmayi Mutyala 3H » Sun Nov 29, 2020 8:12 pm

A delocalized pi bond is present in a molecule that has resonance because the e- are delocalized.

Rachel Kho Disc 2G
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Re: delocalized pi bond

Postby Rachel Kho Disc 2G » Sun Nov 29, 2020 8:25 pm

Delocalized pi bonds occur in molecules that have resonance structures in which the double or triple bonds can be drawn in different locations between atoms. The electrons are free to move over more than two nuclei.

Jiapeng Han 1C
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Re: delocalized pi bond

Postby Jiapeng Han 1C » Sun Nov 29, 2020 8:33 pm

Delocalized pi bond is formed when 2 or more pi bonds are too close together so that they overlap. As a result, the electrons are free to move in the overlapped region. An example would be benzene where 3 pi bonds overlap, causing the formation of 6 delocalized electrons.


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