Dinuclear ruthenium and iron complexes containing palladium and platinum with tri-tert-butylphosphine ligands: Synthesis, structures, and bonding

Richard D. Adams, Burjor Captain, Wei Fu, Michael B. Hall, Mark D. Smith, Charles Edwin Webster

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Abstract

The reaction of Pd(PBut3)2 with Ru(CO)5 yielded the dipalladium-diruthenium cluster complex Ru 2(CO)9[Pd(PBut3)]2, 10. The reaction of Pt(PBut3)2 with Ru(CO) 5 at room temperature afforded the diplatinum-diruthenium cluster complex Ru2(CO)9[Pt(PBut3)] 2, 12, and the monoplatinum-diruthenium cluster PtRu 2(CO)9(PBut3), 11. All three complexes contain a diruthenium group with bridging Pd(PBut 3) or Pt(PBut3) groups. Compound 11 can be converted to 12 by reaction with an additional quantity of Pt(PBu t3)2. The reaction of 12 with hydrogen at 68 °C yielded the dihydrido complex Pt2Ru2(CO) 8(PBut3)2(μ-H)2, 13. This complex contains a Ru2Pt2 cluster with hydride ligands bridging two of the Ru-Pt bonds. The reaction of Fe2(CO) 9 with Pt(PBut3)2 yielded the platinum-diiron cluster complex PtFe2(CO)9(PBu t3), 14, which is analogous to 11. All new complexes were characterized crystallographically. Molecular orbital calculations of 10 reveal an unusual delocalized metal-metal bonding system involving the Pd(PBu t3) groups and the Ru2(CO)9 group.

Original languageEnglish (US)
Pages (from-to)3921-3929
Number of pages9
JournalInorganic Chemistry
Volume43
Issue number13
DOIs
StatePublished - Jun 15 2004
Externally publishedYes

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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