

FOLLOWUS
a.CAS Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
b.University of Chinese Academy of Sciences, Beijing 100049, China
c.College of Materials Science and Engineering, Jilin University, Changchun 130022, China
ymhu@ciac.ac.cn (Y.M.H.)
xqzhang@ciac.ac.cn (X.Q.Z.)
Received:27 October 2017,
Accepted:27 November 2017,
Online First:26 February 2018,
Published:2018-08
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Heng Liu, Rui Zhuang, Bo Dong, et al. Mono- and Binuclear Cobalt(II) Complexes Supported by Quinoline-2-imidate Ligands: Synthesis, Characterization, and 1,3-Butadiene Polymerization[J]. Chinese Journal of Polymer Science, 2018, 36(8): 943-952.
Heng Liu, Rui Zhuang, Bo Dong, et al. Mono- and Binuclear Cobalt(II) Complexes Supported by Quinoline-2-imidate Ligands: Synthesis, Characterization, and 1,3-Butadiene Polymerization[J]. Chinese Journal of Polymer Science, 2018, 36(8): 943-952. DOI: 10.1007/s10118-018-2097-8.
A series of mono- and binuclear Co(II) complexes (
Co1
–
Co7
) supported by quinoline-2-imidate ligands were synthesized and thoroughly characterized. Measured by single crystal X-ray crystallography
complexes
Co1
and
Co3
adopted distorted tetrahedral structures around the cobalt center. Upon activation by ethylaluminium sesquichloride (EASC)
these cobalt complexes exhibited high catalytic activity and
cis
-1
4-selectivity towards 1
3-butadiene polymerization. The effects of ligand environment
polymerization temperature
and cocatalyst types on the polymerization were investigated in detail. Interestingly
the binuclear Co(II) complexes exhibited high thermal stability
and the polymer yields were up to 97.2% even at a high temperature of 70 °C.
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