3.a. Match give complexes given below (by letter) with the proper spectral data in the chart below. All of these complexes have low spin d6 configurations and display two d-d transitions (low absorptivity). Two additional absorptions with high molar absorptivity are observed for the bromo complexes. See table in attachment.
b. What is the origin of high absorptivity absorptions an why are they only observed for two of the complexes?