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Is there a way to determine the extinction coefficient only give the metal ligand complex, spin...

Is there a way to determine the extinction coefficient only give the metal ligand complex, spin state, and HOMO LUMO transition energy?

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Answer #1

Molar absorptivity coefficient is dependent upon the transition state energy of a metal complex and the feasibility of transition HOMO / LUMO states. Only the transitions which are energetically favoured by the said HOMO/LUMO states permit molar absorpticities and give high values of absorption. The transition states when not allowed due to high energy requirement and forbidden by HOMO/LUMO alignment rules do not have give absorption and have very low or no molar absorptivities.

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