Cluster Build-up Reactions using Di-gold Cationic Fragments: Synthesis and Structural Characterization of [Os7(CO)19(Au2dppm)]

Zareen Ahkter, Andrew J. Edwards, Scott L. Ingham, Jack Lewis, Ana M. Martin Castro, Paul R. Raithby, Gregory P. Shields

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The reaction of the di-gold cation [Au2(dppx)]2+ with the heptanuclear cluster dianion [Os7(CO)20]2- affords the mixed metal cluster [Os7(CO)20{Au2 (dppx)}] (x = m (1), e (2), b (3)). On standing, in solution, this complex undergoes decarbonylation to give the cluster [Os7(CO)19{Au2(dppx)}] (x = m (4), e (5), b (6)). The complexes have been characterised spectroscopically, and an X-ray structure determination of the dppm derivative shows that it contains a metal core based on an Os7 edge-bridged bicapped tetrahedron with the two μ3-Au atoms capping adjacent triangular Os3 faces of the central tetrahedron. In an analogous reaction, the carbido anion [Os7(H)C(CO)19]- affords the neutral cluster [Os7C(CO)19{Au2(dppm)}] (7) when treated with [Au2(dppm)]2+ in the presence of base.

Original languageEnglish
Pages (from-to)217-226
Number of pages10
JournalJournal of Cluster Science
Volume11
Issue number1
DOIs
Publication statusPublished - 2000

Keywords

  • Carbonyl
  • Cluster
  • Crystal structure
  • Gold
  • Heteronuclear
  • Osmium
  • Phosphine

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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