Ring-opening polymerization of trimethylenecarbonate by the bridged diphenoxo ytterbium (II) complex

Authors

  • B. Zhao,

    Corresponding author
    1. Key Laboratory of Organic Synthesis, Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
    • Key Laboratory of Organic Synthesis, Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
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  • X. L. Hu,

    1. Key Laboratory of Organic Synthesis, Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
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  • C. R. Lu

    1. Key Laboratory of Organic Synthesis, Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
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Abstract

A novel ytterbium (II) complex 2 supporting by a bridged bisphenolate ligand H2LOC4H7 (L = C4H7OCH2N(CH2-2-OC6H2-3,5-Bumath image)2) with a tetrahydrofuran donor on side-arm was synthesized in high yield and characterized by elementary analysis, IR, 1H-NMR, and 13C-NMR. Ring-opening polymerization of 1,3-trimethylenecarbonate (TMC) was carried out using complex 2 and a known complex [Me2NCH2CH2N(CH2-2-O-3,5-C6H2(But)2)2]Yb 1 as the initiators, respectively. It was found that both complexes 1 and 2 can alone initiate the ring-opening polymerization of TMC, and complex 1 showed higher activity than complex 2. The activity of both complexes 1 and 2 was found to be higher than that of monodentate phenoxo ytterbium (II) complex (2,6-Bumath image-C6H3O)2Yb(THF)3. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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