Effects of the halogenido ligands on the Kumada-coupling catalytic activity of [Ni{^tBuN(PPh₂)₂-κ²P}X₂], X = Cl, Br, I, complexes

Abstract

Novel nickel(ii) complexes [Ni(P,P)X2] = [Ni{tBuN(PPh2)2-κ2P}X2], X = Cl, Br, I, are prepared, characterized by IR and NMR spectroscopy, mass spectrometry and X-ray crystallography, and tested as catalysts in the Kumada cross-coupling reaction.