Silica-supported rhodium hydrides stabilized by triisopropylphosphine

Susannah L. Scott*, Allison Mills, Chhor Chao, Jean-Marie Maurice Basset, Nicolas Millot, Catherine C. Santini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The reaction of the silica-supported complex (≡SiO)(≡ SiOX)Rh(η3-C3H5)2, where X is H or Si, with excess PiPr3 leads to the formation of the chemisorbed bis(phosphine) Rh(I) complex [≡SiORh(PiPr 3)2]x, proposed to be dimeric (x = 2) on the basis of the 31P MAS NMR spectrum. The phosphine complex irreversibly binds H2 to give a hydride complex, ≡SiORh(P iPr3)2(H)2, characterized by IR and 31P MAS NMR spectroscopy as well as D-exchange. The coordinatively unsaturated hydride complex is inferred to be the active site for hydrogenation of olefins under mild conditions.

Original languageEnglish (US)
Pages (from-to)457-463
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume204-205
DOIs
StatePublished - Sep 15 2003

Keywords

  • Catalysis
  • Olefin hydrogenation
  • Silica
  • Surface organometallic chemistry

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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