Reduction of [Cp2*Mo2O5] by mercaptopropionic acid in an aqueous medium. Isolation and characterization of a dinuclear oxo- and 3-sulfido-proprionato(2-)-bridged molybdenum(IV) compound

Chiara Dinoi, Petr Prikhodchenko, Funda Demirhan, Jenny Gun, Ovadia Lev, Jean Claude Daran, Rinaldo Poli*

*Corresponding author for this work

Research output: Contribution to journalShort surveypeer-review

6 Scopus citations

Abstract

Reaction of Cp2*Mo2O5 with HSCH2CH2COOH in acidic (by CF3COOH) 50:50 MeOH-H2O solvent at room temperature yields compound Cp2*Mo2(μ-O)(μ-SCH2CH2CO2)2, a dinuclear diamagnetic MoIV compound with a two-leg-sharing bis(four-legged piano stool) structure and a Mo-Mo distance of 2.6833(6) Å. A reaction monitoring by ESI MS shows the formation of an intermediate 18 mass units heavier, interpreted as a dihydroxo analogue. Electrochemistry shows a reversible, pH independent oxidation process and an irreversible, pH-dependent reduction process. Contrary to a recently published analogous reaction with the closely related HSCH2COOH substrate, this process does not lead to C-S bond cleavage.

Original languageAmerican English
Pages (from-to)2599-2605
Number of pages7
JournalJournal of Organometallic Chemistry
Volume692
Issue number12
DOIs
StatePublished - 15 May 2007

Bibliographical note

Funding Information:
We are grateful to the European Commission for funding of this work through the AQUACHEM Research Training Network (Project No. MRTN-CT-2003-503864). Supplemental support by a Bosphorus bilateral Programme of Integrated Actions, co-sponsored by French Ministry of Foreign Affairs in France and by TUBITAK in Turkey (TBAG-U/142(105T265)) is also gratefully acknowledged. The Israeli group is grateful to the Israel Science foundation for support.

Keywords

  • Alkylsulfido ligands
  • Aqueous organometallic chemistry
  • Carboxylato ligands
  • Molybdenum
  • Pentamethylcyclopentadienyl ligands

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