Abstract
The linear trinuclear iron complex Fe3(SPh)6(CO)6 with bridging benzenethiolate ligands is the subject of temperature- and field-dependent Mössbauer studies. The results reveal the two terminal iron atoms to be diamagnetic (Fe(II) and the central iron atom to be high-spin Fe(II). The magnetic Mössbauer pattern of the latter is dominated by a positive (!) internal field. Complementary to the experimental studies, also theoretical studies are performed. Local density molecular orbital and ligand-field calculations yield an orbitally degenerate ground state that accounts for the unusual electronic and spectroscopic properties.
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Ding, X.Q., Paulsen, H., Grodzicki, M. et al. Spectroscopic and theoretical studies on a three-iron cluster with linear arrangement. Hyperfine Interact 90, 485–490 (1994). https://doi.org/10.1007/BF02069160
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DOI: https://doi.org/10.1007/BF02069160