Ni(0)-promoted activation of C_sp² -H and C_sp² -O bonds.

ABSTRACT: A dinickel(0)-N₂ complex, stabilized with a rigid acridane-based PNP pincer ligand, was studied for its ability to activate C(sp²)-H and C(sp²)-O bonds. Stabilized by a Ni-μ-N₂-Na⁺ interaction, it activates C-H bonds of unfunctionalized arenes, affording nickel-aryl and nickel-hydride products. Concomitantly, two sodium cations get reduced to Na(0), which was identified and quantified by several methods. Our experimental results, including product analysis and kinetic measurements, strongly suggest that this C(sp²)-H activation does not follow the typical oxidative addition mechanism occurring at a low-valent single metal centre. Instead, via a bimolecular pathway, two powerfully reducing nickel ions cooperatively act

SUBMITTER: Min S 

PROVIDER: S-EPMC8317657 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature