Syntheses, structures and catalytic activity of copper(II) complexes with hydroxyindanimine ligands |
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| Authors: | Guangrong Tang |
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| Affiliation: | Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, PR China |
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| Abstract: | A series of new hydroxyindanimine ligands [ArN CC2H3(CH3)C6H2(R)OH] (Ar = 2,6-i-Pr2C6H3, R = H (HL1), R = Cl (HL2), and R = Me (HL3)) were synthesized and characterized. Reaction of hydroxyindanimine with Cu(OAc)2 · H2O results in the formation of the mononuclear bis(hydroxyindaniminato)copper(II) complexes Cu[ArNCC2H3(CH3)C6H2(R)O]2 (Ar = 2,6-i-Pr2C6H3, R = H (1), R = Cl (2), and R = Me (3)). The complex 2′ was obtained from the chlorobenzene solution of the complex 2, which has the same molecule formula with the complex 2 but it is a polymorph. All copper(II) complexes were characterized by their IR and elemental analyses. In addition, X-ray structure analyses were performed for complexes 1, 2, and 2′. After being activated with methylaluminoxane (MAO), complexes 1-3 can be used as catalysts for the vinyl polymerization of norbornene with moderate catalytic activities. Catalytic activities and the molecular weight of polynorbornene have been investigated for various reaction conditions. |
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| Keywords: | Copper complex Hydroxyindanimine ligands Polymerization Norbornene Structures |
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