Synthesis, Crystal Structure and Catalytic Performance of the Trifluoro-substituted Mono(β-diiminato) Copper(II) Complex

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摘要

Two novel copper complexes with methyl or trifluoro-substituted mono-β-diiminato ligands and one acetoxyl anion were synthesized and characterized by IR spectroscopy and elemental analysis for the first time. The structure of complex 2 bearing trifluoro substituents was further confirmed by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P with a = 7.377(4), b = 11.727(6), c = 12.913(7) Å, α = 116.569(6), β = 98.829(7), γ = 96.520(6)°, V = 966.2(8) Å3, Z = 2, Mr = 479.86, Dc = 1.649 g/cm3, F(000) = 482, μ = 1.205 mm-1, the final R = 0.0370 and wR = 0.0903 for 3430 observed reflections with I > 2(I). These mono-β-diiminato copper complexes can effectively catalyze methacrylate (MA) polymerization when activated by MMAO. The introduction of fluoro groups into the N-aryl ring of β-diiminato ligands can greatly increase the catalytic activity of copper complexes as well as the molecular weight of PMA.

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	游向前
	王利伟
	尤庆亮
	李廷成
	张爱清
	谢光勇

关键词 ： copper(II) complex, crystal structure, β-diimine, methacrylate polymerization

Abstract：Two novel copper complexes with methyl or trifluoro-substituted mono-β-diiminato ligands and one acetoxyl anion were synthesized and characterized by IR spectroscopy and elemental analysis for the first time. The structure of complex 2 bearing trifluoro substituents was further confirmed by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P with a = 7.377(4), b = 11.727(6), c = 12.913(7) Å, α = 116.569(6), β = 98.829(7), γ = 96.520(6)°, V = 966.2(8) Å3, Z = 2, Mr = 479.86, Dc = 1.649 g/cm3, F(000) = 482, μ = 1.205 mm-1, the final R = 0.0370 and wR = 0.0903 for 3430 observed reflections with I > 2(I). These mono-β-diiminato copper complexes can effectively catalyze methacrylate (MA) polymerization when activated by MMAO. The introduction of fluoro groups into the N-aryl ring of β-diiminato ligands can greatly increase the catalytic activity of copper complexes as well as the molecular weight of PMA.

Key words： copper(II) complex crystal structure β-diimine methacrylate polymerization

收稿日期: 2016-05-06 出版日期: 2017-01-12

基金资助:

Supported by the National Natural Science Foundation of China (21172269) and the Applied Fundamental Research Project of Wuhan City (2015011701011598)

通讯作者: xiegy@scuec.edu.cn E-mail: xiegy@scuec.edu.cn

引用本文:

游向前;王利伟;尤庆亮;李廷成;张爱清;谢光勇. Synthesis, Crystal Structure and Catalytic Performance of the Trifluoro-substituted Mono(β-diiminato) Copper(II) Complex[J]. 结构化学, 2017, 36(1): 107-112.
YOU Xiang-Qian;WANG Li-Wei;YOU Qing-Liang;LI Ting-Cheng;ZHANG Ai-Qing;XIE Guang-Yong. Synthesis, Crystal Structure and Catalytic Performance of the Trifluoro-substituted Mono(β-diiminato) Copper(II) Complex. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2017, 36(1): 107-112.

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http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2017/V36/I1/107

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