Reduction of [(C5Me5)2Mo2O5] and [(C5Me5)2Mo2O4] in methanol/water/trifluoroacetate solutions investigated by combined on-line electrochemistry/electrospray-ionization mass spectrometry

Jenny Gun*, Alexandre Modestov, Ovadia Lev, Rinaldo Poli

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Complexes [Cp*2Mo2O5] (Cp* = η5-C5Me5) and [Cp*2Mo2O4] were investigated by combined on-line electrochemical (EC) reduction and electrospray-ionization mass spectrometry (ESI-MS) techniques in a trifluoroacetic acid buffered water/methanol solution. The reduction products at the larger negative potentials are identical for both compounds. The studies reveal the existence of a wide range of previously unknown di- and trinuclear MoV, MoIV, MoIII, and mixed-valence complexes that were identified on the basis of their masses and characteristic isotope patterns. The structures of the initial compounds and the product of electroreduction with m/z = 713-729 were supported by in situ MSn experiments that allowed the elucidation of the fragmentation pathway for the collision-induced dissociation.

Original languageAmerican English
Pages (from-to)2264-2272
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number12
DOIs
StatePublished - 25 Jun 2003

Keywords

  • Cyclopentadienyl ligands
  • Electrochemistry
  • Electrospray-ionization mass spectrometry
  • Molybdenum
  • Oxo ligands

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