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Concerning the electronic structure of the ions M(bpy)/sub 3//sup 3 +/ (M = Fe, Ru, Os; bpy = 2,2'-bipyridine)

Technical Report ·
OSTI ID:5770557
In the complexes M(bpy)/sub 3//sup 3 +/ (M = Fe, Ru, Os; bpy = 2,2'-bipyridine), the metal d..pi.. (t/sub 2g/) orbitals are resolved into A/sub 1/ and E components. Analysis of the electronic absorption and EPR spectra show that the A/sub 1/ orbital lies higher in energy than the E orbitals, so that the complexes have an /sup 2/A/sub 1/ ground state. An /sup 2/A/sub 1/ ground state is consistent with theoretical expectations. Further, the orbital splitting in the d..pi.. levels is argued to increase in the order Fe < Ru < Os. The information obtained in the analysis should prove useful in analyzing the metal to ligand charge transfer (MLCT) absorption spectra of the analogous species M(bpy)/sub 3//sup 2 +/. 2 figures, 1 table.
Research Organization:
North Carolina Univ., Chapel Hill (USA). Dept. of Chemistry
DOE Contract Number:
AS05-78ER06034
OSTI ID:
5770557
Report Number(s):
DOE/ER/06034-T4; ON: DE83014993
Country of Publication:
United States
Language:
English