Journal
ORGANOMETALLICS
Volume 39, Issue 8, Pages 1139-1144Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.0c00060
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Funding
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [715060]
- NoNoMeCat Marie Sklodowska-Curie training networ - European Union under the Horizon2020 Program [675020MSCA-ITN-2015-ETN]
- Netherlands Organization for Scientific Research (NWO)
- Research Foundation Flanders (FWO)
- Flemish Government-department EWI
- European Research Council (ERC) [715060] Funding Source: European Research Council (ERC)
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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.
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