Description 1)  Answer the following questions about the spectroscopy of metal centers. a)  Azur ...

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Description 1)  Answer the following questions about the spectroscopy of metal centers. a)  Azurin contains a redox-active Cu center and has a deep blue color owing to a particular charge transfer band. Draw the coordination environment of azurin, and identify the ligand, the ligand orbital, the metal oxidation state and the type of charge-transfer transition that give rise to the blue color. The copper center in azurin can be substituted with Co(II) or Ni(II).  Below is an overlay of the electronic spectra of Co(II)- and Ni(II)-substituted as well as wild-type azurin. Based on the type of the electronic transition specified in 1a, identify which traces (solid, dashed, dashed-dotted) correspond to which type of azurin, and briefly explain your reasoning.