Pi and Sigma Bonds


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Bailey Giovanoli 1L
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Pi and Sigma Bonds

Postby Bailey Giovanoli 1L » Sat Nov 21, 2020 11:15 pm

Just to clarify, pi and sigma bonds occur in both non polar and polar molecules. In the lecture Lavelle showed N2, a no polar bond, and cis-Diochloroethene, A polar bond. Therefore, does this mean that a sigma bond occurs in every single bond, and a sigma and a pi bond occur in every double bond, and so forth for triple bonds? Do all covalent bonds have sigma and/or pi bonds?

KatarinaReid_3H
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Re: Pi and Sigma Bonds

Postby KatarinaReid_3H » Sat Nov 21, 2020 11:38 pm

Yes, all covalent bonds are bonds where electrons are shared and orbitals overlap(sigma bonds). Pi bonds happen when it is a double or triple bonds. It doesn't matter whether the molecule is polar or nonpolar because we are talking about intramolecular forces not intermolecular forces.

Sahiti Annadata 3D
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Re: Pi and Sigma Bonds

Postby Sahiti Annadata 3D » Sun Nov 22, 2020 2:37 pm

I agree with the previous post. Sigma and pi bonds are covalent bonds, so they occur in every covalently bonded molecule regardless of polarity.

Alexandra Salata 2L
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Re: Pi and Sigma Bonds

Postby Alexandra Salata 2L » Sun Nov 22, 2020 3:04 pm

Many covalent compounds contain multiple bonds (double or triple bonds). A difference between single and multiple bonds is that single bonds only have a sigma bond, whereas multiple bonds have both sigma and pi bonds.

David Y
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Re: Pi and Sigma Bonds

Postby David Y » Sun Nov 22, 2020 3:56 pm

It is sigma first and then for double bond would be sigma pi as covalent bonds

Sophia Kalanski 1A
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Re: Pi and Sigma Bonds

Postby Sophia Kalanski 1A » Sun Nov 22, 2020 4:41 pm

I agree with the above statements, these sigma and pi bonds occur with any type of covalently bonded molecule since these molecules may consist of both double and triple bonds.

Megan Lu 3D
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Re: Pi and Sigma Bonds

Postby Megan Lu 3D » Sun Nov 22, 2020 4:51 pm

Hi! Like others have said above, I believe you are correct. Sigma bonds and pi bonds are found in covalent bonds, with single bonds having only a sigma bond. For double bonds and beyond, both sigma and pi bonds are present.

Aayushi Jani 3A
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Re: Pi and Sigma Bonds

Postby Aayushi Jani 3A » Sun Nov 22, 2020 5:41 pm

Yes, I agree with the others. Sigma and pi bonds occur with all covalent bonds. However, single bonds only have a sigma bond while double & triple bonds have sigma & pi bonds.

Linette Choi 3L
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Re: Pi and Sigma Bonds

Postby Linette Choi 3L » Sun Nov 22, 2020 6:00 pm

Yes all covalent bonds would have sigma and pi bonds. However, single bonds only have sigma bonds while double and triple bonds would have both sigma and pi, with the pi bonds making the double and triple bonds more difficult to break.

Ashley Lopez 3J
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Re: Pi and Sigma Bonds

Postby Ashley Lopez 3J » Sun Nov 22, 2020 10:21 pm

Covalent bonds include both sigma and pi bonds. And yes, sigma bonds are in single bonds, sigma and pi are in double bonds, and so forth.

joshtully
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Re: Pi and Sigma Bonds

Postby joshtully » Sun Nov 22, 2020 10:32 pm

All covalent bonds have sigma and pi bonds. Single bonds only have sigma bonds, and double and triple bonds have sigma and pi.


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