Copolymerization of Cyclohexene Oxide and CO2 with a Chromium Diamine-bis(phenolate) Catalyst

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• 作者：Rebecca K. Dean ; Louise N. Dawe ; Christopher M. Kozak
• 刊名：Inorganic Chemistry
• 出版年：2012
• 出版时间：August 20, 2012
• 年：2012
• 卷：51
• 期：16
• 页码：9095-9103
• 全文大小：390K
• 年卷期：v.51,no.16(August 20, 2012)
• ISSN：1520-510X

文摘

A diamine-bis(phenolate) chromium(III) complex, {CrCl[O₂NN鈥瞉^BuBu}₂ catalyzes the copolymerization of cyclohexene oxide with carbon dioxide. The synthesis of this metal complex is straightforward, and it can be obtained in high yields. This catalyst incorporates a tripodal amine-bis(phenolate) ligand, which differs from the salen or salan ligands typically used with Cr and Co complexes that have been employed as catalysts for the synthesis of such polycarbonates. The catalyst reported herein yields low molecular weight polymers with narrow polydispersities. Structural and spectroscopic details of this complex along with its copolymerization activity for cyclohexene oxide and carbon dioxide are presented.