General Chemistry
At 480 nm, the ion, [Cr(CN)6]3-, displays one absorption peak. Determine its crystal field splitting energy, Δ (kJ/mol), and the color of that ion. Is CN- a stronger or weaker field ligand compared to NH3?
The complex [Cr(H2O)6]2+ is observed to form a light-blue solution. Would H2O be considered a weak-field or strong-field ligand?
A complex with a strong-field ligand is usually high spin. Is this claim correct? Briefly explain.
The hypothetical complex [A(H2O)6]2+ has a d-d transition that produces an absorption maximum at a wavelength of about 550 nm.
1. What is the value of Δ for [A(H2O)6]2+ in kJ/mol?
2. How would the magnitude of ∆ change if the H2O ligands in [A(H2O)6]2+ were replaced with NO2−?
