{1,1 `-Bis(diphenylphosphino)ferrocene bridging two mono(cyclopentadienyl) cobalt moieties: Synthesis, structure, electrochemistry and DFT studies}

Citation:
Vitor Rosa, Sara Realista, Ana Mourato, Luisa Maria Abrantes, Joao Henriques, Maria Jose Calhorda, Teresa Aviles, Michael G. B. Drew, and Vitor Felix. "{1,1 `-Bis(diphenylphosphino)ferrocene bridging two mono(cyclopentadienyl) cobalt moieties: Synthesis, structure, electrochemistry and DFT studies}." {JOURNAL OF ORGANOMETALLIC CHEMISTRY}. {712} (2012): {52-56}. copy at https://docentes.fct.unl.pt/p387/publications/11-bisdiphenylphosphinoferrocene-bridging-two-monocyclopentadienyl-cobalt-moieties

Abstract:

{Reaction of {[}Co(eta(5)-C5H5)(CO)(2)], 1, with 1,1'-bis(diphenylphosphino)ferrocene (dppf) yields the new trinuclear complex {[}Co(eta(5)-C5H5)(CO)](2)(mu-dppf), 2, which was structurally characterised by single crystal X-ray diffraction and showed two Co(eta(5)-C5H5)(CO) moieties covalently linked by a dppf bridge. Electrochemical studies in dichloromethane revealed that both Co(I) and Fe(II) in the precursors were oxidized to Co(II)/Co(III) and Fe(III), respectively. On the other hand, in 2 the two first oxidation waves were assigned to Co, the Fe(II) centre requiring a higher potential than in free dppf. DFT calculations showed that the HOMOs of 2 were localised in the Co fragments, owing to the destabilisation of the Co(eta(5)-C5H5)(CO) orbitals after binding dppf. (C) 2012 Elsevier B.V. All rights reserved.}

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