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Ethylene Oligomerizations by Sterically Modulated Salicylaldimine Cobalt(II) Complexes Combined with Various Alkyl Aluminum Cocatalysts

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Abstract

A set of structurally modulated salicylaldimine cobalt(II) complexes have been synthesized and utilized them for ethylene oligomerizations in combination with various organoaluminum cocatalysts. All catalyst systems yielded α-olefins with butenes as major product. The catalytic activity and product distribution were affected by the catalytic structure and reaction conditions. The formation of active species in these complexes under oligomerization conditions was investigated by UV-VIS spectroscopy and the results matched well with oligomerization results.

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Acknowledgments

This work was financially supported by Ministry of Commerce, Industry and Energy. The authors are also grateful to the BK21 Project, the Center for Ultramicrochemical Process System (ERC), and National Core Research Center Program from MOST and KOSEF (R15-2006-022-01002-0).

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan, 609-735, South Korea

    Deepak Chandran, Chang Hun Kwak, Jae Min Oh, In Yong Ahn, Chang-Sik Ha & Il Kim

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  1. Deepak Chandran
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  2. Chang Hun Kwak
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  3. Jae Min Oh
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  4. In Yong Ahn
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  5. Chang-Sik Ha
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  6. Il Kim
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Correspondence to Il Kim.

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Chandran, D., Kwak, C.H., Oh, J.M. et al. Ethylene Oligomerizations by Sterically Modulated Salicylaldimine Cobalt(II) Complexes Combined with Various Alkyl Aluminum Cocatalysts. Catal Lett 125, 27–34 (2008). https://doi.org/10.1007/s10562-008-9556-8

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