Catalytic Effect of Cobalt and Iron Complexes Incorporating Bis(2-aldiminoethyl)amine Ligands on Ethylene Oligomerization

Chemical Research in Chinese Universities ›› 2003, Vol. 19 ›› Issue (2): 231-234.

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Catalytic Effect of Cobalt and Iron Complexes Incorporating Bis(2-aldiminoethyl)amine Ligands on Ethylene Oligomerization

WANG Mei, DAI Dong, ZHU Hong-jun, WANG Hui, SUN Li-cheng

State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P.R. China

Received:2002-06-07 Online:2003-04-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No.20173006).

Abstract

Abstract: Complexes [MCl₂{CH₃N(CH₂CH₂NCR¹R²)₂}](3, M=Co, ¹=H, ²=Ph; 4, M=Fe, R¹=H, R²=Ph; 5, M=Co, R¹=R²=Ph) were prepared and characterized by IR spectra and elemental analysis. The combination of each of complexes 3-5 with ethylaluminoxane(EAO), respectively, was found to be moderately active for ethylene oligomerization to low carbon olefins. The activity of 113 kg oligomers·mol^-1 Co·h^-1 for complex 3(100 mol of EAO, 180 ℃ and 1.8 MPa ethylene) was observed with a selectivity of 93% to C_4-10 olefins, of which 96% were linear C4-10 olefins. The catalytic properties of complexes 3-5 were compared with those of analogous P,P-coordinated complexes [MCl₂{CH₃N(CH₂CH₂PPh₂)₂}](1, M=Co; 2, M=Fe).

Key words: Cobalt and iron complexes, Schiff base, Bis(2-aldiminoethyl)amine, Ethylene oligomerization, Low carbon olefin

WANG Mei, DAI Dong, ZHU Hong-jun, WANG Hui, SUN Li-cheng. Catalytic Effect of Cobalt and Iron Complexes Incorporating Bis(2-aldiminoethyl)amine Ligands on Ethylene Oligomerization[J]. Chemical Research in Chinese Universities, 2003, 19(2): 231-234.

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Catalytic Effect of Cobalt and Iron Complexes Incorporating Bis(2-aldiminoethyl)amine Ligands on Ethylene Oligomerization

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