sigma and pi bonds

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Josephine Lu 4L
Posts: 62
Joined: Fri Sep 28, 2018 12:18 am

sigma and pi bonds

Postby Josephine Lu 4L » Sun Nov 18, 2018 11:35 pm

what is the difference between a sigma and pi bond?

Zenita Leang 2K
Posts: 67
Joined: Fri Sep 28, 2018 12:28 am

Re: sigma and pi bonds

Postby Zenita Leang 2K » Sun Nov 18, 2018 11:41 pm

Sigma bonds allow bound atoms to rotate, meaning the electron density has cylindrical symmetry around the axis. Pi bonds do not allow bound atoms to rotate and thus the electron density is on each side of the internuclear axis. Sigma bonds also interact from one bond to the other while pi bonds overlap each other side by side.

jessicahe4Elavelle
Posts: 61
Joined: Fri Sep 28, 2018 12:27 am
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Re: sigma and pi bonds

Postby jessicahe4Elavelle » Sun Nov 18, 2018 11:43 pm

A σ bond has cylindrical symmetry while a π bond has a nodal plane that includes the bond axis.


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