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Bispentiptycenyl–Diimine–Nickel Complexes for Ethene Polymerization and Copolymerization with Polar Monomers

Kanai, Yuki ; Foro, Sabine ; Plenio, Herbert (2019)
Bispentiptycenyl–Diimine–Nickel Complexes for Ethene Polymerization and Copolymerization with Polar Monomers.
In: Organometallics, 38 (2)
doi: 10.1021/acs.organomet.8b00836
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Ni2+ coordinated within a bowl-shaped diimine ligand with two pentiptycenyl-substituents [(diimine)NiBr2] displays excellent activity for the polymerization of ethene (7 atm) with activities of up to 34 x 10(3) kg(mol Ni)(-1) h(-1) following activation with Et2AlCl. The resulting polymer is characterized by high molecular weights (M-n = 150 x 10(3) g.mol(-1)), low branching (12/1000 C), and a high melting point (Tm = 133 degrees C). The polymerization of ethene with polar comonomers leads to the formation of the respective polar polymers with very efficient incorporation of comonomer. The activity of the catalyst critically depends on the molar ratio of Et2AlCl activator and the polar functional group.

Typ des Eintrags: Artikel
Erschienen: 2019
Autor(en): Kanai, Yuki ; Foro, Sabine ; Plenio, Herbert
Art des Eintrags: Bibliographie
Titel: Bispentiptycenyl–Diimine–Nickel Complexes for Ethene Polymerization and Copolymerization with Polar Monomers
Sprache: Englisch
Publikationsjahr: 11 Januar 2019
Verlag: American Chemical Society
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Organometallics
Jahrgang/Volume einer Zeitschrift: 38
(Heft-)Nummer: 2
DOI: 10.1021/acs.organomet.8b00836
URL / URN: https://pubs.acs.org/doi/10.1021/acs.organomet.8b00836
Kurzbeschreibung (Abstract):

Ni2+ coordinated within a bowl-shaped diimine ligand with two pentiptycenyl-substituents [(diimine)NiBr2] displays excellent activity for the polymerization of ethene (7 atm) with activities of up to 34 x 10(3) kg(mol Ni)(-1) h(-1) following activation with Et2AlCl. The resulting polymer is characterized by high molecular weights (M-n = 150 x 10(3) g.mol(-1)), low branching (12/1000 C), and a high melting point (Tm = 133 degrees C). The polymerization of ethene with polar comonomers leads to the formation of the respective polar polymers with very efficient incorporation of comonomer. The activity of the catalyst critically depends on the molar ratio of Et2AlCl activator and the polar functional group.

Freie Schlagworte: This work was supported by the TU Darmstadt and the DFG PI 178/13-2.
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung
07 Fachbereich Chemie
07 Fachbereich Chemie > Clemens-Schöpf-Institut > Fachgebiet Organische Chemie
Hinterlegungsdatum: 11 Sep 2020 06:55
Letzte Änderung: 11 Sep 2020 06:55
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