Sigma and Pi bonds


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Andrea_Torres
Posts: 98
Joined: Sun Sep 15, 2019 12:15 am

Sigma and Pi bonds

Postby Andrea_Torres » Sun Nov 24, 2019 4:02 pm

I know that a double bond it is a sigma bond and a pi bond, but when drawing it on the actual molecule do you just draw a pi bond?

Midori Hupfeld 3D
Posts: 55
Joined: Fri Aug 30, 2019 12:17 am

Re: Sigma and Pi bonds

Postby Midori Hupfeld 3D » Sun Nov 24, 2019 4:04 pm

No you draw it like a normal double bond and just label them one as sigma and the other as pi.

Hannah Lee 2F
Posts: 117
Joined: Thu Jul 11, 2019 12:15 am

Re: Sigma and Pi bonds

Postby Hannah Lee 2F » Sun Nov 24, 2019 4:44 pm

I agree! The triple bond will be drawn the same way - 1 sigma, 2 pi bonds, and just label them on the Lewis structure.

Charysa Santos 4G
Posts: 107
Joined: Wed Sep 18, 2019 12:21 am

Re: Sigma and Pi bonds

Postby Charysa Santos 4G » Sun Nov 24, 2019 4:46 pm

You must also indicate that there is a sigma bond present, in addition to the pi bond.

April Meza 3K
Posts: 66
Joined: Sat Sep 21, 2019 12:36 am

Re: Sigma and Pi bonds

Postby April Meza 3K » Sun Nov 24, 2019 4:50 pm

I hope this is helpful! The two outer ones are pi bonds and the center one is a sigma bond.
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san_2F
Posts: 118
Joined: Sat Jul 20, 2019 12:15 am

Re: Sigma and Pi bonds

Postby san_2F » Sun Nov 24, 2019 4:52 pm

Nothing actually changes when you draw the lewis structures. You just have to acknowledge that if there's more than one bond, than one of them is sigma and the rest are pi.

Martina
Posts: 111
Joined: Thu Jul 25, 2019 12:16 am

Re: Sigma and Pi bonds

Postby Martina » Sun Nov 24, 2019 5:14 pm

You just have to label one as a sigma bond and one a pi bond if its a double bond. If it is triple then one sigma and two pi.

faithkim1L
Posts: 105
Joined: Fri Aug 09, 2019 12:17 am

Re: Sigma and Pi bonds

Postby faithkim1L » Sun Nov 24, 2019 5:16 pm

When you draw the bonds, you draw them as normal and just label each bond below or beneath the bond with a pi or sigma symbol.

Yiyang Jen Wang 4G
Posts: 76
Joined: Wed Nov 21, 2018 12:18 am

Re: Sigma and Pi bonds

Postby Yiyang Jen Wang 4G » Sun Nov 24, 2019 7:04 pm

I think you can just label the bonds with their names and draw them normally.

SimranSangha4I
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: Sigma and Pi bonds

Postby SimranSangha4I » Sun Nov 24, 2019 7:06 pm

you need to make sure that you just label the bond sigma or pi.

Catherine Daye 1L
Posts: 104
Joined: Wed Sep 11, 2019 12:16 am

Re: Sigma and Pi bonds

Postby Catherine Daye 1L » Sun Nov 24, 2019 7:08 pm

When labeling, one of the bonds is a pi bond, and the other is a sigma bond. Similarly, in a triple bond, one is a sigma bond, and the other two are pi bonds.

Patricia Cardenas
Posts: 103
Joined: Fri Aug 09, 2019 12:17 am

Re: Sigma and Pi bonds

Postby Patricia Cardenas » Sun Nov 24, 2019 7:10 pm

I agree with my peers, you just draw the double bond regularly and label one sigma and one pi.

AniP_2D
Posts: 95
Joined: Sat Aug 17, 2019 12:17 am

Re: Sigma and Pi bonds

Postby AniP_2D » Sun Nov 24, 2019 8:02 pm

When drawing a molecule, you would go about drawing the bonds as you normally would and just label the sigma bonds and pi bonds.
1 bond= 1 sigma, 0 pi
2 bonds=1 sigma, 1 pi
3 bonds= 1 sigma, 2 pi

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

Re: Sigma and Pi bonds

Postby Kevin Liu 1J » Sun Nov 24, 2019 9:13 pm

sigma and pi bonds are simply labeled based on the bond type (single = 1 sigma, double = 1 sigma, 1 pi, triple = 1 sigma, 2 pi)


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