A five-coordinate nickel(II) fluoroalkyl complex as a precursor to a spectroscopically detectable Ni(III) species

Mechanistic proposals for nickel-catalyzed coupling reactions often invoke five-coordinate alkyl- or aryl-bound Ni(II) and/or high-valent nickel(III) species, but because of their reactive nature, they have been difficult to study and fingerprint. In this work, we invoked the stabilizing properties...

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Vydáno v:	Journal of the American Chemical Society Ročník 135; číslo 22; s. 8141
Hlavní autoři:	Zhang, Cheng-Pan, Wang, Huan, Klein, Axel, Biewer, Christian, Stirnat, Kathrin, Yamaguchi, Yoshitaka, Xu, Long, Gomez-Benitez, Valente, Vicic, David A
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States 05.06.2013
ISSN:	1520-5126, 1520-5126
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Popis
Shrnutí:	Mechanistic proposals for nickel-catalyzed coupling reactions often invoke five-coordinate alkyl- or aryl-bound Ni(II) and/or high-valent nickel(III) species, but because of their reactive nature, they have been difficult to study and fingerprint. In this work, we invoked the stabilizing properties of fluoroalkyl ligands to access such nickel species bearing ligands that are commonplace in organic coupling reactions. We show that five-coordinate Ni(II) complexes containing nickel-carbon bonds can readily be prepared given the appropriate precursor, and we also present evidence for the formation of Ni(III) species upon chemical and electrochemical oxidation of the five-coordinate complexes.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1520-5126 1520-5126
DOI:	10.1021/ja4030462