Greater than the Sum of Its Parts: A Heterodinuclear Polymerization Catalyst
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- 作者：Jennifer A. Garden ; Prabhjot K. Saini ; Charlotte K. Williams
- 刊名：Journal of the American Chemical Society
- 出版年：2015
- 出版时间：December 9, 2015
- 年：2015
- 卷：137
- 期：48
- 页码：15078-15081
- 全文大小：345K
- ISSN：1520-5126
文摘
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.