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Synthesis and structural characterization of trifluoromethyl-substituted β-ketoimino copper(II) complex and its catalytic behavior for methyl acrylate polymerization

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Abstract

A new trifluoromethyl-substituted bis(β-ketoimino)copper complex (II) was synthesized and characterized by FTIR, elemental analysis, and X-ray diffraction (CIF file CCDC no. 1023178). XRD refinement revealed that the copper complex adopted a perfect central symmetric square planar structure with the copper center coordinated by two trans β-ketoimine ligands with delocalized double bonds. On activation with modified methylaluminoxane (MMAO), the bis(β-ketoimino)copper complex can polymerize methyl acrylate effectively. Introduction of trifluoromethyl group into the N-aryl ring of the ligands, which leads to strong electron-withdrawing effect, can improve significantly the catalytic activities. The activity of II/MMAO can reach 89.4 kg/mol Cu h, which is among the highest values reported for copper complexes in acrylic monomer polymerization.

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Authors and Affiliations

  1. Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, South-Central University for Nationalities, Wuhan, 430074, P.R. China

    X. Xiao, Y. C. Wen, X. J. Wang, P. Xia, T. C. Li, A. Q. Zhang & G. Y. Xie

  2. Baise University, Baise, 533000, P.R. China

    L. Lei

  3. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, P.R. China

    G. Y. Xie

Authors
  1. X. Xiao
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  2. Y. C. Wen
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  3. X. J. Wang
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  4. L. Lei
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  5. P. Xia
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  6. T. C. Li
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  7. A. Q. Zhang
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  8. G. Y. Xie
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Correspondence to G. Y. Xie.

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Xiao, X., Wen, Y.C., Wang, X.J. et al. Synthesis and structural characterization of trifluoromethyl-substituted β-ketoimino copper(II) complex and its catalytic behavior for methyl acrylate polymerization. Russ J Coord Chem 41, 543–548 (2015). https://doi.org/10.1134/S1070328415080096

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  • DOI: https://doi.org/10.1134/S1070328415080096

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