Early-Transition-Metal Catalysts with Phenoxy–Imine-Type Ligands for the Oligomerization of Ethylene

Early-transition-metal complexes incorporating phenoxy–imine-type bidentate and tridentate ligands, after activation, can achieve selective as well as nonselective ethylene oligomerization to produce 1-hexene, linear α-olefins, and vinyl-terminated low-molecular-weight polyethylenes, all with high efficiency.