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Anionic Iron(II) Alkoxides as Initiators for the Controlled Ring-Opening Polymerization of Lactide

Citation

McGuinness, DS and Marshall, EL and Gibson, VC and Steed, JW, Anionic Iron(II) Alkoxides as Initiators for the Controlled Ring-Opening Polymerization of Lactide, Journal of Polymer Science Part A - Polymer Chemistry, 41, (23) pp. 3798-3803. ISSN 0887-624X (2003) [Refereed Article]

DOI: doi:10.1002/pola.10946

Abstract

Hetero-bimetallic Fe(II) alkoxide/aryloxides were evaluated as initiators for the ring-opening polymerization of rac-lactide. [(THF)NaFe(OtBu)3]2 (1) and [(THF)4Na2Fe(2,6-diisopropylphenolate)4] (2) (THF = tetrahydrofuran) both polymerized lactide efficiently at room temperature, with complex 1 affording better control over the molecular weight parameters of the resultant polymer. At conversions below 70%, a linear increase in molecular weight with conversion was observed, indicative of a well-controlled polymerization process. Complex 2 is the first example of a dianionic Fe(II) alkoxide and has been structurally characterized to reveal a distorted square planar FeO4 array in which both Na counterions bridge two aryloxide ligands and are further complexed by two THF ligands.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic Chemistry
Research Field:Transition Metal Chemistry
Objective Division:Manufacturing
Objective Group:Industrial Chemicals and Related Products
Objective Field:Plastics in Primary Forms
Author:McGuinness, DS (Dr David McGuinness)
ID Code:46836
Year Published:2003
Web of Science® Times Cited:70
Deposited By:Chemistry
Deposited On:2007-09-04
Last Modified:2007-09-04
Downloads:0

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