title: Greater than the Sum of Its Parts: A Heterodinuclear Polymerization Catalyst.
abstract: Homodinuclear catalysts have good precedent for epoxide and carbon dioxide/anhydride copolymerizations; in contrast, so far pure heterodinuclear catalysts are unknown. The synthesis and properties of a heterodinuclear Zn(II)/Mg(II) complex coordinated by a symmetrical macrocyclic ligand are reported. It shows high polymerization selectivity, control, and significantly greater activity compared to either of the homodinuclear analogues or any combinations of them. Indeed, compared to a 50:50 mixture of the homodinuclear complexes, it shows 5 times (CO2/epoxide) or 40 times (anhydride/epoxide) greater activity.
authors.affiliation: Department of Chemistry, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Garden
authors.affiliation: Department of Chemistry, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Prabhjot K
authors.initials: PK
authors.lastname: Saini
authors.affiliation: Department of Chemistry, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Charlotte K
authors.initials: CK
authors.lastname: Williams