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

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

Michelle Gallagher, Pat Dougherty, Pamela S. Tanner, Denis C. Barbini, Jurgen Schulte, Wayne E. Jones Jr

Inorg Chem. 1999 Jun 14;38(12):2953-2956.

PMID: 11671044

Abstract:

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).

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP105046057	(Propylcyclopentadienyl)molybdenum(I) tricarbonyl dimer		105046-05-7	Price

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