Pi Bonds

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Tylor McGrew 1J
Posts: 20
Joined: Fri Sep 29, 2017 7:03 am

Pi Bonds

Postby Tylor McGrew 1J » Sun Nov 19, 2017 3:53 pm

Do pi bonds only occur when there is a double or triple bond?
And if so, what is the reasoning for this? Like what makes this a pi bond and not a double sigma bond?

ami patel
Posts: 20
Joined: Thu Jul 27, 2017 3:00 am

Re: Pi Bonds

Postby ami patel » Sun Nov 19, 2017 4:07 pm

There can only be one sigma bond, because only one s orbital can be hybridized with multiple p orbitals, therefore, a double sigma bond cannot occur because two s orbitals are nowhere near each other and also cannot hybridize together.

Julia Meno 1D
Posts: 28
Joined: Fri Sep 29, 2017 7:04 am

Re: Pi Bonds

Postby Julia Meno 1D » Sun Nov 19, 2017 4:16 pm

Yes, pi bonds occur when there is a multiplicity of bonds. Hybridization is based on regions of electron density, not number of bonds, so the unhybridized orbitals form pi bonds.

Timothy Kim 1B
Posts: 62
Joined: Fri Sep 29, 2017 7:04 am

Re: Pi Bonds

Postby Timothy Kim 1B » Sun Nov 19, 2017 11:31 pm

A double bond needs both a pi bond and sigma bond. When two atoms are bound by more than one covalent bond, the additional orbitals overlap side by side to form pi bonds.

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