Pi and sigma bonds..?

Hey,

I was just wondering if anyone could explain the difference between pi bonds and sigma bonds??

Thanks

Hey,

I was just wondering if anyone could explain the difference between pi bonds and sigma bonds??

Thanks

Sigma Bond:
Made by an overlap of orbitals in the bond. So say if there was a C=C bond, the sigma bond will obviously be between the C=C.

Pi Bond:
Made by the overlap of P Orbitals. There's a diagram which explains it really well. I think Pi bond is responsible for giving out electrons when bonds are broken or formed.

....... sorry but that just isn't correct. The 'correct' definition is related to the symmetry about the internuclear axis (as I wrote above). In practice this usually corresponds to sigma = single bond, pi= the second bond in the double bond.
It is not that p orbitals give pi bonds. P orbitals can overlap to form sigma and pi bonds. Also d orbitals can form sigma, pi and delta! S can only form sigma bonds though.

In my book it says sigma is overlap of orbitals, pi overlap of P orbitals Obviously I'm not learning this in the best detail.

In my book it says sigma is overlap of orbitals, pi overlap of P orbitals Obviously I'm not learning this in the best detail.