## Identifying sigma & pi bonds

904901860
Posts: 24
Joined: Mon Jan 08, 2018 8:16 am

### Identifying sigma & pi bonds

Just to clarify, when there is a double bond one of the bonds is a pi bond and the other is sigma bond correct? Also, when drawing this, would we draw intersecting pi bonds on the molecule?

Nicoline Breytenbach 3D
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### Re: Identifying sigma & pi bonds

Yes, double bonds contain one sigma bond and one pi bond

Posts: 32
Joined: Thu Sep 27, 2018 11:23 pm

### Re: Identifying sigma & pi bonds

single bond - one sigma bond
double bond - one sigma, one pi bond
triple bond - one sigma, two bi bonds
I don't think we'd need to know how to draw it, but just need to be able to identify it.

annaspain
Posts: 32
Joined: Thu Sep 27, 2018 11:24 pm

### Re: Identifying sigma & pi bonds

Yes- sigma bonds are always single bonds. So, in a double bond there will be 1 sigma bond and 1 pi bond, and in a triple bond there will be 1 sigma bond and 2 pi bonds. I don't believe we will have to draw this, but basically in a sigma bond the orbitals overlap end-to-end and in a pi bond they overlap side-by-side (which explains why pi bond prevents rotation).