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Issue 23, 2018
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Coordinative chain transfer copolymerization of ethylene and styrene using an ansa-bis(fluorenyl) neodymium complex and dialkylmagnesium

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Abstract

Coordinative chain transfer copolymerization of ethylene and styrene was successfully achieved using an ansa-bisfluorenyl neodymium complex, a dialkylmagnesium as a chain transfer agent and di-n-butylether (Bu2O) as a co-solvent. Under these conditions, a controlled chain growth was observed during the polymerization. Chain-end functionalization was performed and it revealed that both styryl and alkyl terminated chains shuttle between neodymium and magnesium. The analysis of the microstructure revealed that up to 3 mol% of styrene can be incorporated into the polymer. A computational mechanistic study at the DFT level was performed to characterize insertion selectivities and it further revealed the role of magnesium species in assisting β-H elimination.

Graphical abstract: Coordinative chain transfer copolymerization of ethylene and styrene using an ansa-bis(fluorenyl) neodymium complex and dialkylmagnesium

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Publication details

The article was received on 09 May 2018, accepted on 23 May 2018 and first published on 23 May 2018


Article type: Paper
DOI: 10.1039/C8PY00712H
Polym. Chem., 2018,9, 3262-3271

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    Coordinative chain transfer copolymerization of ethylene and styrene using an ansa-bis(fluorenyl) neodymium complex and dialkylmagnesium

    W. Nzahou Ottou, S. Norsic, M. Poradowski, L. Perrin, F. D'Agosto and C. Boisson, Polym. Chem., 2018, 9, 3262
    DOI: 10.1039/C8PY00712H

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