Citation: LAN Mei-Ying, LIANG Hong, LU Xue-Chun, DENG Jian-Qin, CHENG Xing, CHEN Jian-Xin, ZHANG Zhi-Chun. Synthesis, Structure and Norbornene Polymerization Catalyzed by Nickel(Ⅱ) Complex Bearing N,O-bis(1-(6-ethylpyridin-2-ylimino)-methylenyl)naphthalen-2-ol Ligand[J]. Chinese Journal of Structural Chemistry, ;2015, 34(3): 447-452. doi: 10.14102/j.cnki.0254-5861.2011-0519 shu

Synthesis, Structure and Norbornene Polymerization Catalyzed by Nickel(Ⅱ) Complex Bearing N,O-bis(1-(6-ethylpyridin-2-ylimino)-methylenyl)naphthalen-2-ol Ligand

a.
a. College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, China;
b.
b. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

Corresponding author: CHEN Jian-Xin,
Received Date: 22 September 2014
Available Online: 25 November 2014
Fund Project: Supported by the Natural Science Foundation of Fujian Province (2010J01026) (2010J01026) the Ministry of Education of China (No. 208066) (No. 208066) the Education Department of Fujian Province (JA07029) (JA07029)

The title complex bis{1-{[(6-ethyl-2-pyridinyl)imino]methylenyl}-2-naphthalenolato-N,O}-nickel(Ⅱ) (C₃₆H₃₂N₄O₂Ni) has been synthesized by the reaction of 1-{[(6-ethyl-2-pyridinyl)imino]methylenyl}-2-naphthalenol with Ni(CH₃COO)₂·4H₂O, and characterized by IR spectrum, elemental analysis and TG. The complicated space structure has been confirmed by single-crystal X-ray diffraction analysis. The crystal belongs to the monoclinic system, space group P2₁/c with a=11.410(4), b=14.382(4), c=18.121(6)Å, β=97.147(6)°, V=2950.5(16)Å³, C₃₆H₃₂N₄O₂Ni, M_r=611.37, Z=4, D_c=1.376 g/cm³, μ=0.698 mm^-1, F(000)=1280, the final R=0.0519 and wR=0.1493 (I>2σ(I)). This title compound was used as precatalysts for the polymerisation of norbornene. When activated with MAO, the complex exhibited excellent catalytic activity up to 1.98×10⁷g of PNB (mol of Ni) h with high monomer conversion.
- nickel complex,
- crystal structure,
- catalyst,
- norbornene polymerization
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