Rotation and Ligands

[sarahsalama2E]

I remember in lecture that the most stable configuration for a ligand was LP-SPACER-SPACER-LP. But i was wondering if it's more stable/better for a ligand to have only sigma bonds (to allow for rotation?) or is pi bonds just as stable?

[nicolely2F]

I think that, if stability hasn't been reached yet (i.e. two bonded atoms can potentially become stabler), pi bonds can help stabilize a bond between two atoms.