Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

low oxidation states are found when a complex compound has ligands capable of pi-acceptor character in addition to the sigma-bonding.Explain.

Asked by akankshyasahu 20th December 2011, 7:46 PM
Answered by Expert
Answer:

Pi-acceptor ligand is a ligand that donates a pair of electrons from a lone pair to the metal center but also has the ability to accept electron density from the metal d orbitals into either d orbitals or pi-antibonding orbitals. Low oxidation state complexes can be stabilized by using ligands such as cyanide and carbon monoxide because these ligands are pi-acceptor ligands and these ligands have the capability to donate a pair of electrons from a lone pair to the metal center but also has the ability to accept electron density from the metal d orbitals into either d orbitals or pi-antibonding orbitals. A ligand with ?-acceptor properties has unoccupied orbitals at energies well above the metal dxy, dxz, and dyz orbitals with which mixing occurs to form ? and ?* orbitals. In this case, the ?* orbitals are localized on the ligand (not the metal). The former nonbonding d orbitals now become ? orbitals and are shifted to lower energies, thus increasing ?o.

 

Answered by Expert 21st December 2011, 10:48 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp