Solution equilibria leading to the formation of metal-metal bonds in partially oxidized bisoxalatoplatinate(II) systems

Barbara J. Keller, Stephanie K. Hurst, Steven O. Dunham, Lee Spangler, Edwin H. Abbott, Eric S. Peterson

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The reaction between [PtII(Ox)2]2- and an appropriate oxidant resulted in the formation of the dimeric unbridged platinum complex [{PtIII(Ox)2 }2]2- where (Ox) is oxalate. This complex was moderately stable under ambient conditions and was studied via a variety of NMR and spectrophotometric techniques. Reaction of the [{PtIII(Ox)2}2]2- complex with [PtII(Ox)2]2- in the presence of H+ lead to the formation of a series of longer platinum oligomers with non-integral oxidation states, culminating in the formation of partially oxidized platinum polymers of general formula [{Pt(Ox)2} n]n-. The concentration of H+ was an important factor leading to higher oligomers and the approximate number of protons associated with each oligomer was determined. The analogous [{Pt III(Mal)2}2]2- complex, where (Mal) is the malonate anion, was also synthesized and studied but was shown to be significantly less stable.

Original languageEnglish (US)
Pages (from-to)853-858
Number of pages6
JournalInorganica Chimica Acta
Volume357
Issue number3
DOIs
StatePublished - Feb 20 2004
Externally publishedYes

Keywords

  • Dimer
  • Oxalato
  • Partially oxidized
  • Platinum
  • Polymer

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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