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 Citations (Scopus)

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

Fingerprint

Platinum
oligomers
Oligomers
platinum
Metals
metals
Oxalates
oxalates
Oxidants
Anions
Protons
Polymers
Negative ions
Nuclear magnetic resonance
anions
Oxidation
nuclear magnetic resonance
oxidation
protons
polymers

Keywords

  • Dimer
  • Oxalato
  • Partially oxidized
  • Platinum
  • Polymer

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Solution equilibria leading to the formation of metal-metal bonds in partially oxidized bisoxalatoplatinate(II) systems. / Keller, Barbara J.; Hurst, Stephanie K; Dunham, Steven O.; Spangler, Lee; Abbott, Edwin H.; Peterson, Eric S.

In: Inorganica Chimica Acta, Vol. 357, No. 3, 20.02.2004, p. 853-858.

Research output: Contribution to journalArticle

Keller, Barbara J. ; Hurst, Stephanie K ; Dunham, Steven O. ; Spangler, Lee ; Abbott, Edwin H. ; Peterson, Eric S. / Solution equilibria leading to the formation of metal-metal bonds in partially oxidized bisoxalatoplatinate(II) systems. In: Inorganica Chimica Acta. 2004 ; Vol. 357, No. 3. pp. 853-858.
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AU - Abbott, Edwin H.

AU - Peterson, Eric S.

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N2 - 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.

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KW - Partially oxidized

KW - Platinum

KW - Polymer

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