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


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2015-08

AUTHORS

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

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. More... »

PAGES

543-548

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1070328415080096

DOI

http://dx.doi.org/10.1134/s1070328415080096

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1026342929


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43 schema:description 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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