Sigma and Pi bonds

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Sophia Bozone 2G
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

Sigma and Pi bonds

Postby Sophia Bozone 2G » Sun Nov 26, 2017 7:17 pm

I understand that a double bond will be comprised of a sigma and pi bond, but I don't understand the hybridization and orbitals that prove that. Could do someone explain it?

SitharaMenon2B
Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

Re: Sigma and Pi bonds

Postby SitharaMenon2B » Sun Nov 26, 2017 7:27 pm

Sigma bonds are formed when orbitals are end to end, and pi bonds are formed when orbitals are side by side. Hybridization explains the shape and orientation of the orbitals, which is needed to see if they overlap end to end or side by side. If one bond is formed end to end ( a sigma bond), it's impossible for the second bond between the same two atoms to have two more orbitals end to end. The second bond would have to be side by side, which would be a pi bond, making the double bond a sigma bond and pi bond.

Veronica Rasmusen 2B
Posts: 49
Joined: Sat Jul 22, 2017 3:01 am

Re: Sigma and Pi bonds

Postby Veronica Rasmusen 2B » Sun Dec 03, 2017 9:33 pm

Pi bonds are formed by leftover p orbitals, so for example if an atom of carbon was double bonded to another atom of carbon (with each carbon single-bonded to another atom), the sigma bond would be sp3 hybridized and the pi bond would be 2p hybridized.


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