Question

Is CN a pi acceptor ligand?

Answer 1

Acceptor ligands: Those ligands with empty orbitals that can interact with metal d-orbitals to form a - bond are called -acceptor ligands.

Cyanide (CN): Cyanide is a chemical compound containing the C≡N functional group.

• This group, known as a cyano group, is made up of a carbon atom that is three times bonded to a nitrogen atom.
• In inorganic cyanides, the cyanide group is present as the anion CN⁻.
• A family of coordination compounds, usually composed only of cyanide ligands, are cyanometalates or cyanometalates.
• They are mainly ions.
• Cyanide is an extremely simple and narrow ligand, so the coordination region of metal ions is easily saturated.
• Yes, the cyanide group acts as a pi-acceptor ligand and as a sigma-donor ligand.