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Oxidative Addition of Aryl Halides to a Triphosphine Ni(0) Center to Form Pentacoordinate Ni(II) Aryl Species

Journal Contribution - Journal Article

Oxidative addition of aryl halides to Ni(0) is a ubiquitous elementary step in cross-coupling and related reactions, usually producing a square-planar Ni(II)-aryl intermediate. Here we show that a triphosphine ligand supports oxidative addition at a tris-ligated Ni(0) center to cleanly form stable five-coordinate Ni(II)-aryl compounds. Kinetic and computational studies support a concerted, two-electron mechanism rather than radical halogen abstraction. These results support the idea that oxidative addition to triphosphine Ni(0) species may be more generally involved in Ni/phosphine catalytic systems.
Journal: Organometallics
ISSN: 0276-7333
Issue: 8
Volume: 39
Pages: 1139 - 1144
Publication year:2020
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:2
CSS-citation score:2
Authors:International
Authors from:Higher Education
Accessibility:Open