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New half-sandwich zirconium(IV) complexes containing salicylaldimine ligands: Synthesis, characterizations and catalytic properties

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Abstract

Two new half-sandwich zirconium(IV) complexes bearing salicylaldimine ligands of the type Cp*Zr[2-tBu-4-R-6-(CH=NiPr)C6H2O]Cl2[R=H(1), tBu(2)] were prepared by the reaction of Cp*ZrCl3 with the corresponding lithium of salicylaldimine ligands 2-tBu-4-R-6-(CH=NiPr)C6H2OLi[R=H(LiLa), tBu(LiLb)]. Complexes 1 and 2 were characterized by 1H NMR, 13C NMR spectroscopy and elemental analysis. When activated with AliBu3 and Ph3CB(C6F5)4, both complexes 1 and 2 exhibited reasonable catalytic activities for ethylene polymerization, producing polyethylenes with moderate molecular weight. Complexes 1 and 2 also exhibited reasonable catalytic activities for ethylene copolymerization with 1-hexene, producing poly(ethylene-co-1-hexene)s with moderate molecular weight and reasonable 1-hexene content.

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Authors and Affiliations

  1. Yellow River Dalta Jingbo Research Institute of Chemical Industry, Boxing, 256500, P. R. China

    Kefeng Liu, Gang Yao & Wenlei Wu

  2. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China

    Bo Gao

  3. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China

    Bo Gao

Authors
  1. Kefeng Liu
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  2. Gang Yao
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  3. Wenlei Wu
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  4. Bo Gao
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Corresponding authors

Correspondence to Kefeng Liu or Bo Gao.

Additional information

Supported by the National Natural Science Foundation of China(No.21204082).

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Liu, K., Yao, G., Wu, W. et al. New half-sandwich zirconium(IV) complexes containing salicylaldimine ligands: Synthesis, characterizations and catalytic properties. Chem. Res. Chin. Univ. 30, 825–830 (2014). https://doi.org/10.1007/s40242-014-4054-6

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  • DOI: https://doi.org/10.1007/s40242-014-4054-6

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