The activity of ferrocene-chelating heteroscorpionate complexes of zinc, [fc(PPh2)(BH[(3,5-Me)2pz]2)]Zn(OR) ((fcP,B)Zn(OR); fc = 1,1’-ferrocenediyl; R = H, Ph, Bn), as initiators toward the polymerization of cyclic esters was investigated. To probe the possibility of switchable activity of these complexes through the oxidation of the ferrocene moiety, (fcP,B)Zn(OR) complexes were treated with acetyl ferrocenium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate ([AcFc][BArF]) to yield the corresponding [(fcP,B)Zn(OR)][BArF] complexes. Their activity toward the polymerization of cyclic esters was also examined.

Ring-opening polymerization of cyclic esters by ferrocene-chelating heteroscorpionate zinc complexes

251st National Meeting (2016)

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