What does delocalized π bond mean?

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dana hu 1B
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What does delocalized π bond mean?

Postby dana hu 1B » Tue Nov 24, 2020 11:15 pm

What does delocalized π bond mean?
Thank you!

Sonel Raj 3I
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Re: What does delocalized π bond mean?

Postby Sonel Raj 3I » Wed Nov 25, 2020 12:31 am

I'm pretty sure delocalized pi bonds happen in molecules which have resonance structures with double or triple bonds. Just like the electrons which form the double/triple bond is delocalized, because of the resonance hybrid, the pi bond(s) would also be delocalized!

Rajshree 1F
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Re: What does delocalized π bond mean?

Postby Rajshree 1F » Wed Nov 25, 2020 9:00 am

Structures that have resonance hybrids because the electrons are delocalized therefore so is the pi bond.

AnjikaFriedman-Jha2D
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Re: What does delocalized π bond mean?

Postby AnjikaFriedman-Jha2D » Wed Nov 25, 2020 9:02 am

A delocalized pi bond comes from resonance structures that allow the electrons to be delocalized as well such that the bonds are spread evenly across the resonance structures so each bond length is actually the same

Aaina 2D
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Re: What does delocalized π bond mean?

Postby Aaina 2D » Wed Nov 25, 2020 9:22 am

In general, molecules that have resonance, would have delocalized pi bonds. Hope this makes sense :)

Rachel Jiang 3H
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Re: What does delocalized π bond mean?

Postby Rachel Jiang 3H » Wed Nov 25, 2020 9:31 am

Pi bonds are usually rigid and they prevent atoms sharing the pi bond from rotating (atoms sharing a double or triple bond cannot rotate). Some molecules with resonance have delocalized pi bonds where the electrons in the pi bonds are free to move around. Hope this helps!

Alessia Renna 1D
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Re: What does delocalized π bond mean?

Postby Alessia Renna 1D » Wed Nov 25, 2020 12:43 pm

delocalized pi bonds are formed when pi orbitals extend across two or more atoms in one molecule

Marco Morales 2G
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Re: What does delocalized π bond mean?

Postby Marco Morales 2G » Wed Nov 25, 2020 11:24 pm

A lewis structure has delocalized Pi bonds when the lewis structure has resonance. Meaning there are delocalized electrons (aka shared electrons) throughout the whole molecule.

Inderpal Singh 2L
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Re: What does delocalized π bond mean?

Postby Inderpal Singh 2L » Thu Nov 26, 2020 2:17 am

I believe resonance means there are delocalized pi bonds.

Liam Bertrand 3
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Re: What does delocalized π bond mean?

Postby Liam Bertrand 3 » Thu Nov 26, 2020 9:50 am

Think of benzene, where there are 3 double bonds, however, each carbon could theoretically form a double bond. Furthermore, the pi bonds are all in the same plane, allowing a sort of highway where electrons can move freely. Thus at any point the pi bond could be between any two of the carbons in benzene

Ariel Guan 1H
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Re: What does delocalized π bond mean?

Postby Ariel Guan 1H » Thu Nov 26, 2020 3:22 pm

delocalized pi bonds come from molecules that have resonance structures

BKoh_2E
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Re: What does delocalized π bond mean?

Postby BKoh_2E » Fri Nov 27, 2020 11:29 am

All double bonds have one pi bond. Since resonance structures are a blend of the possible structures (delocalized electrons), the pi bonds in a resonance structure would also be delocalized.

JaesalSoma1E
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Re: What does delocalized π bond mean?

Postby JaesalSoma1E » Fri Nov 27, 2020 12:40 pm

Resonance structures have delocalized pi bonds since the electrons are delocalized as well.

Mary Gallo 1G
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Re: What does delocalized π bond mean?

Postby Mary Gallo 1G » Fri Nov 27, 2020 2:28 pm

Delocalized pi bonds refer to molecules that have resonance structures. This means that the pi bond can be between different atoms in the same molecule as long as it has resonance.

Brandon Le 3C
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Re: What does delocalized π bond mean?

Postby Brandon Le 3C » Fri Nov 27, 2020 9:16 pm

A delocalized pi bond is a pi bond in which a delocalized electron is present, which involves resonance structures. Since resonance structures is a combination/blend of of all the possible structures of a molecule, the electrons become delocalized, and therefore the pi bond of a double bond would be delocalized.

Adam Bustamante 1I
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Re: What does delocalized π bond mean?

Postby Adam Bustamante 1I » Sun Nov 29, 2020 9:31 am

A delocalized pi bond would mean that the Lewis structure has resonance

Emma_Barrall_3J
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Re: What does delocalized π bond mean?

Postby Emma_Barrall_3J » Sun Nov 29, 2020 12:31 pm

Delocalized pi bonds means resonance.

Jason Knight - 1F
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Re: What does delocalized π bond mean?

Postby Jason Knight - 1F » Sun Nov 29, 2020 12:35 pm

A delocalized pi bond tells us there is resonance in the lewis structure of the molecule because the certain pi bond can exist in more than one configuration.

Talia Dini - 3I
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Re: What does delocalized π bond mean?

Postby Talia Dini - 3I » Sun Nov 29, 2020 1:17 pm

Hi! Delocalized pi bonds would exist in resonance structures. Hope this helps!


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