Electron-rich CpIr(biphenyl-2,2′-diyl) complexes with π-accepting carbon donor ligands

Jonathan Graeupner, Timothy P. Brewster, James D. Blakemore, Nathan D. Schley, Julianne M. Thomsen, Gary W. Brudvig, Nilay Hazari, Robert H. Crabtree

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Cp*Ir III and CpIr III complexes have attracted interest as catalysts for oxidative transformations, and highly oxidizing iridium species are postulated as key intermediates in both catalytic water and C-H bond oxidation. Strongly electron-donating ligand sets have been shown to stabilize Ir IV complexes. We describe the synthesis and reactivity of complexes containing the CpIr(biphenyl-2,2′-diyl) moiety stabilized by a series of strong donor carbon-based ligands. The oxidation chemistry of these complexes has been characterized electrochemically, and a singly oxidized Ir IV species has been observed by X-band EPR for the complex CpIr(biph)(p-CNCH 2SO 2C 6H 4CH 3).

Original languageEnglish
Pages (from-to)7158-7164
Number of pages7
Issue number20
Publication statusPublished - Oct 22 2012

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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