Pi vs Sigma Bonds


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Frederick Keith_4C
Posts: 65
Joined: Thu Sep 26, 2019 12:19 am

Pi vs Sigma Bonds

Postby Frederick Keith_4C » Sun Nov 17, 2019 1:39 pm

Why are sigma bonds stronger than pi bonds in general??
I read something about overlapping and stuff but it still isn't making sense in my head as to why that makes it harder to break.
If someone could explain the topic to me as if I were a child, that would be absolutely phenomenal.

Andrew Jang 4D
Posts: 50
Joined: Sat Aug 17, 2019 12:18 am

Re: Pi vs Sigma Bonds

Postby Andrew Jang 4D » Sun Nov 17, 2019 2:00 pm

The orbitals involved in forming sigma bonds overlap more than the orbitals involved in forming pi bonds. This increased overlapping of orbitals makes sigma bonds relatively stronger because it creates shorter and therefore stronger bonds.

Kevin Liu 1J
Posts: 53
Joined: Thu Jul 25, 2019 12:16 am

Re: Pi vs Sigma Bonds

Postby Kevin Liu 1J » Sun Nov 17, 2019 2:22 pm

Sigma and pi bonds both involve the overlap of atomic orbitals in different ways, but to put it simply, pi bonds are weaker due to the fact that there is less overlap present normally than there is in sigma bonds.

ranqiao1e
Posts: 51
Joined: Sat Sep 14, 2019 12:15 am

Re: Pi vs Sigma Bonds

Postby ranqiao1e » Fri Nov 22, 2019 10:26 pm

Because the overlapping area of sigma bond is much bigger than pi bonds

Megan Cao 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:18 am

Re: Pi vs Sigma Bonds

Postby Megan Cao 1I » Sat Nov 23, 2019 12:17 am

sigma bonds have a greater overlapping area than pi bond, therefore their bonds are greater than pi bonds.

Jingyao Chen 4H
Posts: 49
Joined: Fri Sep 27, 2019 12:19 am

Re: Pi vs Sigma Bonds

Postby Jingyao Chen 4H » Sat Nov 23, 2019 2:14 pm

Adding on, the overlap means the overlap in the possible regions that electrons will be there. Therefore, the greater the over lap, the more electrons there are for sharing/interacting, resulting in a strong bond.

ranqiao1e
Posts: 51
Joined: Sat Sep 14, 2019 12:15 am

Re: Pi vs Sigma Bonds

Postby ranqiao1e » Fri Nov 29, 2019 9:40 pm

Because sigma bonds have greater overlap than pi bonds do.

Victoria Otuya 4F
Posts: 50
Joined: Wed Sep 18, 2019 12:21 am

Re: Pi vs Sigma Bonds

Postby Victoria Otuya 4F » Sat Nov 30, 2019 11:09 am

Are sigma single bonds, and pi double bonds? I am confused on how to count those bonds?

Verity Lai 2K
Posts: 100
Joined: Sat Aug 24, 2019 12:18 am

Re: Pi vs Sigma Bonds

Postby Verity Lai 2K » Sat Nov 30, 2019 2:53 pm

All bonds have at a sigma bond, which is just a single bond. Any bonds after the first one are pi bonds, such as double or triple bonds.

Siya Shah 1J
Posts: 50
Joined: Sat Aug 17, 2019 12:15 am

Re: Pi vs Sigma Bonds

Postby Siya Shah 1J » Sat Nov 30, 2019 3:39 pm

Victoria Otuya 4F wrote:Are sigma single bonds, and pi double bonds? I am confused on how to count those bonds?

A single bond is a sigma bond. A double bond has a sigma bond and a pi bond. A triple bond has a sigma bond and two pi bonds.

Drake Choi_1I
Posts: 58
Joined: Sat Aug 17, 2019 12:15 am

Re: Pi vs Sigma Bonds

Postby Drake Choi_1I » Sat Nov 30, 2019 3:41 pm

On test 2, we were asked to label sigma and pi bonds. I only knew that sigma bonds were for single bonds and double bonds had pi bonds. Can someone explain how we were supposed to label them?


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