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Infrared characterization of spinel-supported trirutheniumdodecacarbonyl

Authors
Journal
Vibrational Spectroscopy
0924-2031
Publisher
Elsevier
Publication Date
Volume
8
Issue
3
Identifiers
DOI: 10.1016/0924-2031(94)00055-l
Keywords
  • Carbonyl Group
  • Infrared Spectrometry
  • Ruthenium
  • Spinel (Mgal2O4)
  • Surface Adducts
  • Trirutheniumdodecacarbonyl

Abstract

Abstract Infrared (IR) spectrometry was used to characterize the surface adduct formed upon interaction of Ru 3(CO) 12 with dehydroxylated MgAl 2O 4 (spinel) prepared in a high-surface-area form. IR spectra of the adsorbed metal carbonyl showed strong evidence for a terminal-to-bridge shift of CO ligands and attendant coordination, via a μ-CO group, to coordinatively unsaturated Al 3+ ions (Lewis acid centres) at the spinel surface. An IR absorption band was observed at 1604 cm −1, and assigned to the surface bound μ-CO ligand. The remaining terminal CO groups gave a complex IR absorption in the 1970–2100 cm −1 range.

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