2-(1-Arylimino)quinolylnickel halides: Synthesis, characterization and catalytic behavior towards ethylene

►2-(1-Aryliminoethylidene)quinoline derivatives. ►Nickel halide complexes bearing 2-(1-aryliminoethylidene)quinolines. ►The distorted trigonal bipyramidal geometry of nickel halides. ►Nickel pre-catalysts in highly in ethylene oligomerization.