Simplified and versatile access to low valent Ni complexes by metal-free reduction of Ni<sup>II</sup> precursors
作者:Emile Moser、Erwann Jeanneau、Nicolas Mézailles、Hélène Olivier-Bourbigou、Pierre-Alain R. Breuil
DOI:10.1039/c9dt00668k
日期:——
The reduction of [Ni(DME)Cl2] with 2 equiv. of bis(trimethylsilyl)-1,4-tetramethyldihydropyrazine in the presence of a ligand L and an excess of olefin cleanly leads to [Ni(L)(alkene)2] complexes. When reduction is performed in the presence of 1,5-cyclooctadiene (COD), [Ni(COD)2] is obtained. Such an approach also allows access to the NiI dimer [Ni(bis(dicyclohexylphosphino)propane)Cl]2.
Reactions de complexes du nickel avec l'acetylene pour aboutir a des complexes de types (R 3 P) 2 Ni(C 2 H 2 ), [(RO) 3 P] 2 , Ni(C 2 H 2 ), (t-BuNC) 2 Ni(C 2 H 2 ), [(R 3 P)Ni(C 2 H 2 )(C 2 H 4 )], [(R 3 P)Ni(C 2 H 4 ) 2 (μ-C 2 H 2 )] et (R 3 P)Ni(C 2 H 2 ) 2
Reactions de complexes du Nickel avec l'乙炔浇注关于一种 des complexes de type (R 3 P) 2 Ni(C 2 H 2 ), [(RO) 3 P] 2 , Ni(C 2 H 2 ), (t- BuNC) 2 Ni(C 2 H 2 ), [(R 3 P)Ni(C 2 H 2 )(C 2 H 4 )], [(R 3 P)Ni(C 2 H 4 ) 2 (μ-C 2 H 2 )] et (R 3 P)Ni(C 2 H 2 ) 2