Polarography in Acetone of Tris(Dithioacetylacetonato)-Complexes of Iron(III), Ruthenium(III), Osmium(III), and Rhodium(III)

A. M. Bond, G. A. Heath, R. L. Martin

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Polarographic studies have been carried out in acetone on the dithio(acetyl-acetonato)-complexes [FORMULA OMITTED] where [FORMULA OMITTED], (all d5, low-spin) and Rh(III) (d, low-spin). The iron and osmium complexes are reversibly reduced at the DME, whereas the ruthenium complex undergoes a quasi-reversible reduction. For the d5 systems the electrode reaction is believed to be [FORMULA OMITTED] However reduction of [FORMULA OMITTED] is highly irreversible and may involve adsorption or compound formation at the mercury surface. Millieoulometric studies indicate the electrode reaction is [FORMULA OMITTED]. The half-wave potentials [FORMULA OMITTED] accord with the known chemistry and spectroscopic properties of the complexes. The development of polarographic techniques for use in acetone is described in detail.

Original languageEnglish
Pages (from-to)1362-1367
Number of pages6
JournalJournal of the Electrochemical Society
Issue number11
Publication statusPublished - Nov 1970
Externally publishedYes


  • polarography
  • tris(dlthioacetylacetonato)-complexes acetone

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