Published 2002 | Version v1
Journal article Metadata-only

Electron paramagnetic resonance investigations of CO adsorption on RuY zeolite

Creators

  • 1. Laboratoire de Reactivite de Surface UMR 7609-CNRS, Universite Pierre et Marie Curie, Paris, (France)
  • 2. Department de Chimie, Universite de Laval, Quebeck (Canada)
  • 3. Chaquin, P. Laboratoire de Chimie Organique Theorique, Universite Pierre et Marie Curie, Paris, (France)
  • 4. Chemistry Department, Peking University, Beijng (China)
  • 5. Laboratoire d'Optique des Solides, UMR 7601-CNRS, Paris (France)
  • 6. Faculty of Chemistry, Jagiellonian University, Cracow (Poland)

Description

The adsorption of carbon monooxide onto ruthenium exchanged into NaY zeolite has been investigated by CW-EPR techniques using 13C-enriched CO. A new spin η[Ru3cCO]5 adduct with g(perpendicular) = 2.065, g(parallel) = 1.987 and |A(perpendicular)|(99Ru) = 1.3 mT, |A(parallel)|(99Ru) = 1.7 mT, |A(perpendicular)|(101Ru) = 1.5 mT, |A(parallel)|(101Ru) = 1.9 mT and |A(perpendicular)|(13C) = 6.0 mT, |A(parallel)|(13C) = 6.8 mT has been identified. The magnetic parameters have been analysed in terms of the molecular structure and spin density distribution. The results are consistent with an apical coordination of CO and the bonding established by the overlap between dz2 and 5σ orbitals. The η[RuIII3cCO]5 adduct can be classified as a σ metal-centered radical located in SII'/SII sites. The spin density on Ru is equal 0.6 and is confined mainly to the Dz2 orbital and 0.1 on carbon atom of the CO ligand. (author)

Additional details

Publishing Information

Journal Title
Bulletin of the Polish Academy of Sciences. Chemistry
Journal Volume
50
Journal Issue
2
Journal Page Range
p. 267-279
ISSN
0239-7285

INIS

Country of Publication
Poland
Country of Input or Organization
Poland
INIS RN
35061788
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ADSORPTION; CARBON 13; CARBON MONOXIDE; ELECTRON SPIN RESONANCE; ELECTRONIC STRUCTURE; LABELLED COMPOUNDS; MOLECULAR STRUCTURE; RUTHENIUM 101; RUTHENIUM 99; RUTHENIUM ADDITIONS; ZEOLITES
Descriptors DEC
ALLOYS; CARBON COMPOUNDS; CARBON ISOTOPES; CARBON OXIDES; CHALCOGENIDES; EVEN-ODD NUCLEI; INORGANIC ION EXCHANGERS; INTERMEDIATE MASS NUCLEI; ION EXCHANGE MATERIALS; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; MATERIALS; MINERALS; NUCLEI; OXIDES; OXYGEN COMPOUNDS; PLATINUM METAL ALLOYS; RESONANCE; RUTHENIUM ALLOYS; RUTHENIUM ISOTOPES; SILICATE MINERALS; SORPTION; STABLE ISOTOPES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
31 refs, 3 figs, 3 tabs