Sigma and Pi Bonds
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 103
- Joined: Sat Aug 17, 2019 12:17 am
Sigma and Pi Bonds
To my understanding, Sigma bonds are between single bonds and are able to rotate and Pi bonds are the bonds after the first bond of a sigma bond and cannot rotate. Do we need to know anything else for these types of bonds?
-
- Posts: 101
- Joined: Thu Jul 25, 2019 12:15 am
Re: Sigma and Pi Bonds
Not sure if we need to know this: but I think when reactions occur and bond breaks, the pi bonds break first before the sigma bonds and sigma bonds form before pi bonds when bonds form.
-
- Posts: 50
- Joined: Thu Jul 25, 2019 12:17 am
-
- Posts: 104
- Joined: Sat Aug 24, 2019 12:18 am
- Been upvoted: 1 time
Re: Sigma and Pi Bonds
Pi bonds interact by laying side by side whereas sigma bonds interact end to end. Sigma bonds look like a cylinder, having cylindrical symmetry around the internuclear axis while pi bonds look like two lobes on one side of the internuclear axis.
-
- Posts: 59
- Joined: Wed Sep 18, 2019 12:20 am
Re: Sigma and Pi Bonds
Yes, we should just know that and how they interact as mentioned above. And how to show their interaction on a molecule.
-
- Posts: 125
- Joined: Sat Aug 17, 2019 12:17 am
Re: Sigma and Pi Bonds
Andrew F 3B wrote:To my understanding, Sigma bonds are between single bonds and are able to rotate and Pi bonds are the bonds after the first bond of a sigma bond and cannot rotate. Do we need to know anything else for these types of bonds?
Regarding sigma and pi bonds I think that the most important things to know is that sigma bonds are present in single bonds, and pi bonds and sigma bonds are present for double bonds, and for triple bonds, two pi bonds and one sigma bond. Also, regarding pi bonds, orbitals overlap side by side, and are rigid, compared to single bonds in sigma bonds.
-
- Posts: 54
- Joined: Sat Jul 20, 2019 12:17 am
Re: Sigma and Pi Bonds
That's the main idea; I'd know how to count both in a molecule and know which breaks first (pi).
-
- Posts: 50
- Joined: Thu Jul 11, 2019 12:15 am
Re: Sigma and Pi Bonds
i think we just have to know how to count them, know which one is stronger, and their different interactions with the internuclear axis
Who is online
Users browsing this forum: No registered users and 7 guests