In [Ti(H2O)6)]3+, Ti3+ ion has only one electron in 3d-orbital. The electron occupies the orbital of the lowest energy, i.e., any one of the degenerate t2g orbitals. The violet/purple colour of [Ti(H2O)6)]3+ ion is due to absorption of blue-green light and transition of electron of the t2g orbitals to one of the degenerate eg ortibals. The absorption spectrum of [Ti(H2O)6)]3+ reveals that the d-d transition occurs with a single broad peak.
What is the reason for the colour of potassium dichromate. Colour of dichromate ion. Why is chromate yellow in colour. Charge transfer transition. LMCT transition.
What is the difference between d-d transition and charge transfer transition. How do we distinguish between d-d and MLCT transistions.