Pi and Sigma Bonds

$sp, sp^{2}, sp^{3}, dsp^{3}, d^{2}sp^{3}$

Bailey Giovanoli 1L
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Joined: Wed Sep 30, 2020 9:50 pm

Pi and Sigma Bonds

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

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.

Posts: 94
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Re: Pi and Sigma Bonds

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

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

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

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

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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Joined: Wed Sep 30, 2020 9:51 pm

Re: Pi and Sigma Bonds

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
Posts: 93
Joined: Wed Sep 30, 2020 9:51 pm

Re: Pi and Sigma Bonds

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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Joined: Wed Sep 30, 2020 10:06 pm

Re: Pi and Sigma Bonds

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
Posts: 92
Joined: Wed Sep 30, 2020 9:36 pm

Re: Pi and Sigma Bonds

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