Synthesis and Characterization of Tetrahydrofurfurylcyclopentadienyl Molybdenum Tricarbonyl Dimer: Evidence for 19-Electron Intramolecular "Solvento" Interactions.

Academic Article


  • The synthesis and characterization of a THF pendant, dimeric Mo cyclopentadienyl complex is reported and the structure characterized by NMR, FTIR, and UV-vis spectroscopies. The dimer was found to undergo metal-metal bond homolysis under either photochemical or electrochemical conditions to yield an odd-electron complex. Cyclic voltammetry under varying scan rate conditions from 25 to 10 000 mV/s demonstrates a dynamic equilibrium process that we assign to the formation of either an intramolecular 19-electron (18 + delta) complex or a bare 17-electron complex. Photolysis of the dimer in room temperature solution could be monitored as a loss of the dpi-dsigma transition at 503 nm by transient absorption spectroscopy. The recovery of the transient absorption signal at 410 nm follows first-order kinetics at a rate of 5 x 10(3) s(-1).
  • Authors

  • Gallagher, Michelle
  • Dougherty, Pat
  • Tanner, Pamela S
  • Barbini, Denis C
  • Schulte, Jurgen
  • Jones, Wayne
  • Status

    Publication Date

  • June 14, 1999
  • Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 11671044
  • Start Page

  • 2953
  • End Page

  • 2956
  • Volume

  • 38
  • Issue

  • 12