Supramolecular approach to metal-support interactions: Reactivity of silica-supported bis(allyl)rhodium(III) and the influence of surface hydroxyl groups

Catherine C. Santini*, Susannah L. Scott, Jean-Marie Maurice Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The structure and stoichiometric reactivity of a surface organometallic fragment, bis(allyl)rhodium(III) on silica, has been studied in order to identify concepts of molecular chemistry which can be applied to mechanisms of heterogeneous catalysis. The reactions with electrophiles and Lewis bases are examined. The similarity of the 'supramolecular' surface chemistry to molecular chemistry was limited since the surface hydroxyl groups of silica were found to participate. A hydroxyl group in the coordination sphere of rhodium is a source of electrophilic protons, and neighbouring hydroxyl groups facilitate surface mobility of grafted organometallic fragments.

Original languageEnglish (US)
Pages (from-to)263-271
Number of pages9
JournalJournal of Molecular Catalysis A: Chemical
Volume107
Issue number1-3
DOIs
StatePublished - Jan 1 1996

Keywords

  • Hydroxyl groups
  • Metal-support interactions
  • Rhodium
  • Silica
  • Supported catalysts

ASJC Scopus subject areas

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

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