Abstract
Room temperature electronic spectra and frozen solution Mössbauer spectra (collected at 78 K) of TPPSFe(II) solutions are reported and discussed. Evidence for aggregation is found and discussed with reference to the known crystal structures of TPPFe(II) and TPPFe(III)(OClO 3)·O.5( m-xylene). The orientation of the phenyl rings is inferred to be similar to that of known crystal structures for two of the four species found to be present in the pH range 6-14. These are the intermediate spin iron(II) and the high spin iron(II) (Δ = 4.1 mm s −1) species.
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