Preparation, structure and ethylene polymerization behavior of mixed-halide nickel(II) complexes and cobalt(II) complex containing imidazolium |
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Authors: | Xin Wang |
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Institution: | Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Handan Road 220, Shanghai 200 433, China |
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Abstract: | Preparation of two imidazolium salts, two monomeric nickel(II) and one cobalt(II) complexes bearing imidazolium ligands is described, The solid-state structures of these compounds have determined by single-crystal X-ray diffraction. After activation with methylaluminoxane (MAO) the nickel complexes show moderate catalytic activities of up to 6 × 105 g PE mol−1Ni h−1 for polymerization of ethylene. Catalytic activities, molecular weights have been investigated under the various reaction conditions. |
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Keywords: | Imidazolium salts Nickel Cobalt Homogeneous catalysts Polymerization Polyethylene |
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