An Unsaturated Nickel(0) NHC Catalyst: Facile Preparation and Structure of Ni(0)(NHC)2, Featuring a Reduction Process from Ni(II)(NHC)(acac)2

Autor:	Taisuke Matsumoto, Kouki Matsubara, Yuji Koga, Takaaki Hashimura, Satoshi Miyazaki, Yoshinori Nibu
Rok vydání:	2008
Předmět:	chemistry.chemical_classification Ligand Organic Chemistry chemistry.chemical_element Medicinal chemistry Divalent Adduct Catalysis Inorganic Chemistry chemistry.chemical_compound Nickel chemistry Organic chemistry Physical and Theoretical Chemistry Carbene
Zdroj:	Organometallics. 27:6020-6024
ISSN:	1520-6041 0276-7333
Popis:	A facile synthetic route to Ni(0)(NHC)2 from stable Ni(II)(acac)2 was established without common but labile Ni(0) precursors. The intermediate is a divalent mono-NHC adduct of Ni(acac)2, Ni(NHC)(acac)2. Reduction of Ni(NHC)(acac)2 in both the presence and absence of an NHC ligand gave Ni(NHC)2 in ca. 90% and 40% conversions, respectively. Ni(NHC)2, especially with bis(2,6-diisopropylphenyl)imidazolin-2-ylidene, has strong Ni−C(carbene) bonds and remarkable anagostic Ni−H(methyl) interactions, stabilizing its 14e unsaturated structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0d088465e2670e02e5b10401ba64f917 https://doi.org/10.1021/om800488x Zobrazit plný text záznamu