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
Synthesis, Structure and Norbornene Polymerization Catalyzed by Nickel(Ⅱ) Complex Bearing N,O-bis(1-(6-ethylpyridin-2-ylimino)-methylenyl)naphthalen-2-ol Ligand
摘要:
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, Mr=611.37, Z=4, Dc=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.
English
Synthesis, Structure and Norbornene Polymerization Catalyzed by Nickel(Ⅱ) Complex Bearing N,O-bis(1-(6-ethylpyridin-2-ylimino)-methylenyl)naphthalen-2-ol Ligand
Abstract:
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, Mr=611.37, Z=4, Dc=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.
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Key words:
- nickel complex
- / crystal structure
- / catalyst
- / norbornene polymerization
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