Based on the crystal-field strengths Cl^-

Question

Based on the crystal-field strengths Cl^- < F^- < H₂O < NH₃ < H₂NC₂H₄NH₂, which octahedral Ti (III)complex below has its d-d electronic transition at shortest wavelength? A)[Ti(NH₃)₆]³⁺ B)[Ti(H₂NC₂H₄NH₂)₃]³⁺ C)[Ti(H₂O)₆]³⁺ D)[TiCl₆]^3- E)[TiF₆]^3-

Quizplus · Accepted Answer

The crystal-field strength of the ligand determines the energy of the d-d electronic transition. The stronger the crystal-field strength, the higher the energy of the transition and the shorter the wavelength. Among the given options, [Ti(H₂NC₂H₄NH₂)₃]³⁺ has the strongest crystal-field strength due to the presence of the strongest ligand, H₂NC₂H₄NH₂. Therefore, it will have the d-d electronic transition at the shortest wavelength.

Based on the Crystal-Field Strengths Cl- < F- < H2O

Based on the Crystal-Field Strengths Cl^- < F^- < H₂O