Ligand-mediated metal-metal interactions in (ν55-fulvalene) bis (dicarbonylcobalt) and rhodium complexes

Dennis L. Lichtenberger, Nadine E. Gruhn, Margaret E. Rempe, William E. Geiger, Teen T. Chin

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Gas phase photoelectron spectroscopy (PES) is used to investigate the bonding and electronic structure in (fv) [M(CO)2]2 (fv = fulvalene, η55-C10H82-; M = Co, Rh). The results for these bimetallic complexes are also compared to those for the analogous monometallic complexes CpM(CO)2 (Cp = η5-C5H5-; M = Co, Rh) which have been reported previously. The low valence ionization patterns observed for CpCo(CO)2 and (fv)[Co(CO)2]2 are very similar, indicating that there is little electronic interaction between the two metals of the dicobalt complex. The spectrum of (fv)[Rh(CO)2]2 also is very similar to the spectrum of CpRh(CO)2, except that the first metal ionizations in the bimetallic rhodium compound show a significant splitting (0.45 eV). This splitting is due to electronic interaction between the two metal centers which occurs via communication through the fulvalene π system. The differences in electronic structure are compared to the differences in electrochemical behavior of the Co and Rh fulvalene complexes.

Original languageEnglish (US)
Pages (from-to)623-629
Number of pages7
JournalInorganica Chimica Acta
Volume240
Issue number1-2
DOIs
StatePublished - Dec 1995

Keywords

  • Bimetallic complexes
  • Cobalt complexes
  • Fulvalene complexes
  • Gas phase photoelectron spectroscopy
  • Rhodium complexes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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