Binuclear Iron-Manganese Acetyl and Hydride Complexes from the Reactions of Cp(CO)2FePPh2 with CH3Mn(CO)5 and HMn(CO)5

Richard P. Rosen, Jeffrey B. Hoke, Robert R. Whittle, Gregory L. Geoffroy, John P. Hutchinson, Jon A. Zubieta

Research output: Contribution to journalArticle

58 Scopus citations

Abstract

The new heterobimetallic bridging acetyl complex Cp(CO)Fe(μ-C(O)CH3)μ-PPh2)Mn(CO)4 (1) has been prepared by the reaction of CH3Mn(CO)5 with PPh2FeCp(CO)2 been refined to R = 0.044 and Rw = 0.042 for the 3353 reflections with I > 3σ(I). The acetyl ligand bridges the Fe and Mn centers with the acetyl carbon attached to Fe and the oxygen bound to Mn. The nonbonded metals (Fe. Mn = 3.718 Å) are also bridged by the μ-PPh2 ligand. The chemistry of complex 1 has been examined with HBF4, [{CH3)3O]BF4, [Ph3C]BF4, H2, PPh2Me, and MeLi, and these reactions are discussed. Reaction of HMn(CO)5 with PPh2FeCp(CO)2 gives the bridging hydride complex Cp(CO)Fe(μ-H)(μ-PPh2)Mn(CO)4 (3), which has also been structurally characterized. It crystallizes in the monoclinic space group P2l/n with a = 10.795 (4) Å, b = 13.931 (2) Å, c = 14.497 (4) Å, β = 102.08 (3)°, V = 2132 (2) Å3, and Z = 4. The structure has been refined for the 2412 reflections with I > 2σ(I) to R = 0.057 and Rw = 0.063. The Fe and Mn atoms are separated by 2.806 (1) Å and are bridged by the hydride and the μ- PPh2 ligand. The Fe atom is further coordinated by the Cp ligand and one CO, and Mn has four additional CO ligands.

Original languageEnglish (US)
Pages (from-to)846-855
Number of pages10
JournalOrganometallics
Volume3
Issue number6
DOIs
StatePublished - May 1984
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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