Citation: Yan-Ning Zeng, Qi-Feng Xing, Yan-Ping Ma, Wen-Hua Sun. Dinuclear Nickel(Ⅱ) Chlorides Bearing N, N'-bis(5, 6, 7-trihydroquinolin-8-ylidene)-[1, 1'-biphenyl]-4, 4'-diamines: Synthesis and Ethylene Polymerization[J]. Chinese Journal of Polymer Science, ;2018, 36(2): 207-213. doi: 10.1007/s10118-018-2054-6 shu

Dinuclear Nickel(Ⅱ) Chlorides Bearing N, N'-bis(5, 6, 7-trihydroquinolin-8-ylidene)-[1, 1'-biphenyl]-4, 4'-diamines: Synthesis and Ethylene Polymerization

Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Received Date: 8 September 2017
Accepted Date: 30 September 2017
Available Online: 21 November 2017

5, 6, 7-Trihydroquinolin-8-one was condensed with the corresponding benzidine to give N, N'-bis(5, 6, 7-trihydroquinolin-8-ylidene)-[1, 1'-biphenyl]-4, 4'-diamine derivatives (L1-L3). The ligands were reacted with two equivalents of NiCl₂·6H₂O in a mixture of EtOH and CH₂Cl₂ to afford the corresponding dinickel(Ⅱ) chloride complexes (Ni1-Ni3). The organic compounds were completely characterized, whilst the bi-metallic complexes were characterized by FTIR spectra and elemental analysis. These nickel complexes exhibited high activities towards ethylene polymerization in the presence of either MAO or Me₂AlCl, maintaining a high activity over a prolonged period. The obtained polyethylenes were confirmed as having low molecular weights by GPC analysis.
- Dinuclear nickel complexes,
- Ethylene polymerization,
- Molecular weight,
- Molecular weight distribution
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