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

Pablo M. Pérez−garcía, Andrea Darù, Arthur R. Scheerder, Martin Lutz, Jeremy N. Harvey, Marc-etienne Moret

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)1139-1144
JournalOrganometallics
Volume39
Issue number8
DOIs
Publication statusPublished - 27 Apr 2020

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