False
Explanation:
What is a Pi Acceptor Ligand?
Pi acceptor ligands are ligands that can accept electron density through their pi orbitals. These ligands are typically strong-field ligands that cause a large splitting of the d orbitals in coordination complexes.
Co Group as a Pi Acceptor Ligand:
The Co group is not a pi acceptor ligand. Cobalt (Co) is actually a transition metal that can act as both a pi donor and sigma donor ligand. It can also form coordination complexes where it donates electron density through its d orbitals.
Examples of Pi Acceptor Ligands:
Examples of pi acceptor ligands include ligands like carbon monoxide (CO), cyanide (CN-), and nitrosyl (NO+). These ligands have empty pi* orbitals that can accept electron density from the metal center.
Conclusion:
In conclusion, the Co group is not considered a pi acceptor ligand. It is important to understand the different types of ligands and their properties when studying coordination chemistry.