## Strength of Sigma and Pi Bonds

Moderators: Chem_Mod, Chem_Admin

Nathan Mariano 2G
Posts: 51
Joined: Thu Sep 27, 2018 11:29 pm

### Strength of Sigma and Pi Bonds

Is there a reason why sigma bonds are stronger than pi bonds?

Samantha Ito 2E
Posts: 51
Joined: Thu Sep 27, 2018 11:29 pm

### Re: Strength of Sigma and Pi Bonds

It has to do with the orientation of overlapped orbitals. Sigma bonds are formed by end-to-end overlapping while pi bonds are formed by lateral overlapping. The extent of overlapping is maximized in sigma bonds and is therefore stronger than pi bonds.

Ivan Tadeja 4B
Posts: 31
Joined: Thu Sep 27, 2018 11:28 pm

### Re: Strength of Sigma and Pi Bonds

The overlap of pi bonds are smaller than the overlap of sigma bonds, making pi bonds easier to break apart. Hence, sigma bonds are stronger.

Sameen Mahmood 3D
Posts: 37
Joined: Wed Jun 13, 2018 2:00 am

### Re: Strength of Sigma and Pi Bonds

Sigma bonds overlap more closely across the internuclear axis. The concentration of electrons brings the nuclei closer together (harder to detach).

Yiting_Gong_4L
Posts: 52
Joined: Thu Sep 27, 2018 11:25 pm

### Re: Strength of Sigma and Pi Bonds

sigma bonds are stronger because the overlap of the sigma bond is smaller than the pi bond so it is harder to break apart.

Michael_Navarro_1H
Posts: 29
Joined: Thu Sep 27, 2018 11:17 pm

### Re: Strength of Sigma and Pi Bonds

You can also think of pi bonds as relating to double bonds while sigma bonds only refer to single bonds.

Return to “Sigma & Pi Bonds”

### Who is online

Users browsing this forum: No registered users and 2 guests