Benefits of donor solvents as additive on ROMP of norbornene catalyzed by amine Ru complexes

The complexes with either piperidine (x = 1) or imidazole (x = 2) were tested for ring opening metathesis polymerization of norbornene in the presence of small amounts of common solvents such as additives, with the aim of understanding the influence of these molecules on the catalytic reactivity and on the properties of the resulting polymer.