Same Ligand, Different Metals: Diiodo-Salan Complexes of the Group 4 Triad in Isospecific Polymerization of 1-Hexene and Propylene

In this work we describe the synthesis of a Salan ligand featuring diiodo-phenolate rings, the dibenzyl complexes of this ligand with the group 4 triad metals, and the polymerization of 1-hexene and propylene by these complexes. The polymerization of propylene by titanium- Salan complexes was not reported previously, and the activity of such a catalyst, revealed herein, is quite remarkable