New facets of an old ligand: titanium and zirconium complexes of phenylenediamine bis(phenolate) in lactide polymerisation catalysis

Ayellet L. Zelikoff; Jacob Kopilov; Israel Goldberg; Geoffrey W. Coates; Moshe Kol

doi:10.1039/B915211C

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Chemical Communications

Issue 44, 2009

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New facets of an old ligand: titanium and zirconium complexes of phenylenediamine bis(phenolate) in lactide polymerisation catalysis

Ayellet L. Zelikoff , Jacob Kopilov , Israel Goldberg , Geoffrey W. Coates and Moshe Kol

Chem. Commun., 2009, 6804-6806

DOI: 10.1039/B915211C
Received 27 Jul 2009, Accepted 17 Sep 2009
First published on the web 02 Oct 2009

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Abstract
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Phenylenediamine bis(phenolate) binds in the reduced dianionic form to titanium and zirconium alkoxides giving either mononuclear or bridging dinuclear complexes depending on the metal precursors; the fluxional mononuclear titanium complex is found to exhibit extremely high activity in polymerisation of rac-lactide in the melt.

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Articles By

Ayellet L. Zelikoff
Jacob Kopilov
Israel Goldberg
Geoffrey W. Coates
Moshe Kol

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Chemical Communications

New facets of an old ligand: titanium and zirconium complexes of phenylenediamine bis(phenolate) in lactide polymerisation catalysis

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