title: C-C sigma complexes of rhodium.
abstract: In this article, the complexes [Rh(Binor-S')(PR3)][BAr(4)(F)] (R = (i)Pr, Cy, C(5)H(9)) are described. A combination of x-ray crystallography, NMR spectroscopy, density functional theory, and "atoms in molecules" calculations unequivocally demonstrates that the complexes contain rare examples of metal...C-C agostic interactions. Moreover, they are fluxional on the NMR time scale, undergoing rapid and reversible C-C activation. Kinetic data and calculations point to a bismetallacyclobutane, Rh(V), intermediate.
authors: Department of Chemistry, University of Bath, Bath, United Kingdom.
authors: Simon K
authors: SK
authors: Brayshaw
authors: Emma L
authors: EL
authors: Sceats
authors: Jennifer C
authors: JC
authors: Green
authors: Andrew S
authors: AS
authors: Weller