A Stable Coordination Complex of Rh(IV) in an N,O-Donor Environment

Shashi B. Sinha, Dimitar Y. Shopov, Liam S. Sharninghausen, David J. Vinyard, Brandon Q. Mercado, Gary W Brudvig, Robert H. Crabtree

Research output: Contribution to journalArticle

16 Citations (Scopus)


We describe facial and meridional isomers of [RhIII(pyalk)3], as well as meridional [RhIV(pyalk)3]+ {pyalk =2-(2-pyridyl)-2-propanoate}, the first coordination complex in an N,O-donor environment to show a clean, reversible RhIII/IV redox couple and to have a stable Rh(IV) form, which we characterize by EPR and UV-visible spectroscopy as well as X-ray crystallography. The unprecedented stability of the Rh(IV) species is ascribed to the exceptional donor strength of the ligands, their oxidation resistance, and the meridional coordination geometry.

Original languageEnglish
Pages (from-to)15692-15695
Number of pages4
JournalJournal of the American Chemical Society
Issue number50
Publication statusPublished - Dec 23 2015


ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Sinha, S. B., Shopov, D. Y., Sharninghausen, L. S., Vinyard, D. J., Mercado, B. Q., Brudvig, G. W., & Crabtree, R. H. (2015). A Stable Coordination Complex of Rh(IV) in an N,O-Donor Environment. Journal of the American Chemical Society, 137(50), 15692-15695. https://doi.org/10.1021/jacs.5b12148