Synthesis and characterization of polynuclear complexes of molybdenum carbonyl derivatives with pyridine-2-carbaldehyde azine (pa) and ferrocenylphosphines. Crystal structure of [Mo2(CO)6(μ-dppf)(μ-pa)] (dppf = 1,1′-bis(diphenylphosphino)ferrocene)

Juan Granifo, Andres Vega, Maria T. Garland

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Novel mono- and didentate ferrocenylphosphines containing complexes, [Mo2(CO)6(dfpp)2(μ-pa)] (dfpp = diferrocenylphenylphosphine) and [Mo2(CO)6(μ-dppf)(μ-pa)], have been isolated and characterized by infrared and electronic spectroscopy, and cyclic voltammetry. For the [Mo2(CO)6(μ-dppf)(μ-pa)] complex a single crystal X-ray structure analysis evidences its double bridge nature and the asymmetry of the bridging ligands due to steric constraints. In the visible region, the new compounds show strong solvatochromic bands and this effect has been evaluated by using the E*MLCT parameter. The redox behaviour of the complexes involves molybdenum and ferrocene-based oxidations and pa-based reductions. The results are compared to the previously characterized analogous complexes based on the related ligands triphenylphosphine and 1,2-bis(diphenylphosphino)ethane.

Original languageEnglish
Pages (from-to)1729-1733
Number of pages5
JournalPolyhedron
Volume17
Issue number10
DOIs
Publication statusPublished - 1998

Keywords

  • Carbonyl
  • Ferrocenylphosphines
  • Molybdenum
  • Polypyridine complexes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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