Reactions of Aluminium Tribromide with Tetrakis(triphenylphosphine)nickel(0) and Tetrakis(triethylphosphite)nickel(0) Complexes

摘要: Reactions of aluminium tribromide with the Ni(0) phosphine and phosphite complexes are studied by EPR method. AlBr3was found to cause oxidation transition metal in (PPh3)4Ni complex univalent state formation tetracoordinated (PPh3)3NiBr complex. With an excess AlBr3, ligands eliminated from coordination sphere Ni(I), coordinatively unsaturated destroyed give colloidal nickel. In reaction (P(OEt)3)4Ni is also oxidized but acido ligand not even a 15-fold Lewis acid. The activity catalytic systems on basis acids low-molecular oligomerization reactions olefines determined cationic Ni(I) formed these systems.