Synthesis and Characterization of (DIPPCCC)Fe Complexes: A Zwitterionic Metalation Method and CO2 Reactivity

Bailey J. Jackson, Daniel C. Najera, Ellen M. Matson, Toby J. Woods, Jeffery A. Bertke, Alison R. Fout

Research output: Contribution to journalArticlepeer-review


The synthesis and characterization of a series of novel iron complexes has been accomplished using a monoanionic pincer bis(carbene) ligand framework. Metalation first proceeded through an isolated Fe(II) zwitterionic intermediate that was subsequently reduced in situ to Fe(0) to facilitate oxidative addition of the aryl C-H bond, generating the FeII-H complexes. Varying the L-type ligand on these complexes exhibited profound effects, as observed by IR and 1H NMR spectroscopy. Higher oxidation states of Fe could also be supported in this ligand framework, as evidenced by the isolation of two Fe(III) complexes. Treating an FeII-H complex with CO2 generated an Fe-formate complex (κ2-OOCH) from insertion into the FeII-H bond. The independent synthesis of this molecule was accomplished by treating FeII-Cl with excess NaOOCH.

Original languageEnglish (US)
Pages (from-to)2943-2952
Number of pages10
Issue number15
StatePublished - Aug 12 2019

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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