delocalized pi bond
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 102
- Joined: Wed Sep 30, 2020 10:00 pm
delocalized pi bond
Hi! I was wondering what the difference between a pi bond and a delocalized pi bond is? Thanks!
-
- Posts: 174
- Joined: Wed Sep 30, 2020 10:01 pm
- Been upvoted: 2 times
Re: delocalized pi bond
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.
-
- Posts: 106
- Joined: Wed Sep 30, 2020 9:36 pm
- Been upvoted: 2 times
Re: delocalized pi bond
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.
-
- Posts: 116
- Joined: Wed Sep 30, 2020 10:00 pm
Re: delocalized pi bond
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!
-
- Posts: 102
- Joined: Wed Sep 30, 2020 10:05 pm
- Been upvoted: 1 time
Re: delocalized pi bond
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.
-
- Posts: 100
- Joined: Wed Sep 30, 2020 9:54 pm
Re: delocalized pi bond
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.
-
- Posts: 105
- Joined: Wed Sep 30, 2020 9:50 pm
Re: delocalized pi bond
A delocalized pi bond is present in a molecule that has resonance because the e- are delocalized.
-
- Posts: 79
- Joined: Wed Sep 30, 2020 9:46 pm
Re: delocalized pi bond
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.
-
- Posts: 101
- Joined: Wed Sep 30, 2020 9:50 pm
Re: delocalized pi bond
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.
Return to “*Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)”
Who is online
Users browsing this forum: No registered users and 6 guests