Question

The coloration of $\left[Fe\right(acac{)}_3\left]\text{and}\right[Fe(phen{)}_3{]}^{3+}$ respectively are due to

• A. ligand to metal charge transfer, metal to ligand charge transfer
• B. metal to ligand charge transfer, metal to ligand charge transfer
• C. metal to ligand charge transfer, d-d transition
• D. d-d transition, intravalence charge transfer

Answer 1

The correct option is B metal to ligand charge transfer, metal to ligand charge transfer

Colour of $\left[Fe\right(acac{)}_3\left]\text{and}\right[Fe(phen{)}_3{]}^{3+}$ is due to metal to ligand charge transfer.
Metal to ligand Charge Transfer (MLCT): Charge transfer occur from the ligand filled orbitals of metal to the empty orbital of ligands.