Angewandte Chemie International Edition
10.1002/anie.202110785
RESEARCH ARTICLE
2
addition also relies on an initial η -arene complex between the
118, 2249–2295.
aryl ether and Ni0.[60] Due to the quenched Lewis acidity at Ni in
phosphine and NHC species, co-complexation of the
organometallic nucleophile is less likely to occur. Indeed, no
nickelate formation or ligand dissociation is observed when
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[
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Ni(PEt
observed no evidence of ligand dissociation when
Li (TMEDA) Ph NiCOD (2b) was treated with PCy (Scheme
c). This both illustrates the strong s-donation of the carbanionic
3 4
) is treated with PhLi (Scheme 8b). Finally, we also
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2
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lability and p-accepting properties of COD (and other olefins) are
0
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By studying the rich co-complexation chemistry of PhLi with
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2
Ni(COD) , we discovered and isolated a series of diverse lithium
nickelates which have been characterised by spectroscopic and
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ethers, providing strong support for the alternative anionic
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1
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summarising all new structures. The Synergy diffractometer was
partially funded by the Swiss National Science Foundation
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Keywords: Nickel • Organolithium • Catalysis • Cross-Coupling •
Heterobimetallics
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