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Synthesis and characterization of titanium complexes bearing sulfoxide groups and their catalytic behaviors in ethylene homo- and copolymerization

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Abstract

Titanium complexes derived from 2,4-di-tert-butyl-6-((2-(arylsulfinyl)phenylimino)methyl)phenol are designed and synthesized. X-ray diffraction studies reveal that the complexes adopt distorted octahedral geometry with O(phenol), N(imine), and O(sulfoxide) coordinated with titanium. Combined with modified methylaluminoxane(MMAO), the complexes exhibit moderate to high activity to afford polyethylene even at 120 °C under 1 atm ethylene pressure. The complexes also show excellent capability in copolymerization of ethylene with either 1-hexene or norbornene. Results indicate that the introduction of sulfoxide groups could open the space around central metal and favors the insertion of bulky comonomers.

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Authors and Affiliations

  1. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China

    Zheng Wang, Ai-Qing Peng, Xiu-Li Sun & Yong Tang

Authors
  1. Zheng Wang
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  2. Ai-Qing Peng
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  3. Xiu-Li Sun
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  4. Yong Tang
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Correspondence to Yong Tang.

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Dedicated to Professor Qian Changtao on the occasion of his 80th birthday.

TANG Yong received his Ph.D. degree in 1996 at Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, under the supervision of Prof. Yaozeng Huang and Prof. Lixin Dai. After three years’ postdoctoral research in the USA, he joined Shanghai Institute of Organic Chemistry, CAS, in 1999. He was promoted to a full Professor in 2000. His current research interests are the development of new synthetic methodologies and the design and synthesis of olefin polymerization catalysts.

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Wang, Z., Peng, AQ., Sun, XL. et al. Synthesis and characterization of titanium complexes bearing sulfoxide groups and their catalytic behaviors in ethylene homo- and copolymerization. Sci. China Chem. 57, 1144–1149 (2014). https://doi.org/10.1007/s11426-014-5137-4

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  • DOI: https://doi.org/10.1007/s11426-014-5137-4

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