Carbon–Carbon Bond-Forming Reductive Elimination from Isolated Nickel(III) Complexes

James R. Bour†, Nicole M. Camasso†, Elizabeth A. Meucci†, Jeff W. Kampf†, Allan J. Canty¥, and Melanie S. Sanford*†

http://pubs.acs.org/doi/abs/10.1021/jacs.6b10350

Abstract

This manuscript describes the design, synthesis, characterization, and reactivity studies of organometallic NiIII complexes of general structure TpNiIII(R)(R1) (Tp = tris(pyrazolyl)borate). With appropriate selection of the R and R1 ligands, the complexes are stable at room temperature and can be characterized by cyclic voltammetry, EPR spectroscopy, and X-ray crystallography. Upon heating, many of these NiIII compounds undergo C(sp2)–C(sp2) or C(sp3)–C(sp2) bond-forming reactions that are challenging at lower oxidation states of nickel.