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Issue 13, 2012
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Synthesis, characterization and catalytic activity of lithium and sodium iminophenoxide complexes towards ring-opening polymerization of L-lactide

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Abstract

A series of lithium and sodium iminophenoxide complexes have been successfully synthesized and characterized by X-ray crystallography and investigated as catalysts for the ring opening polymerization of L-lactide. The nature and steric bulk of the ligands coordinated to the central metal ions greatly influence the catalytic properties. Complexes with bidenate ligands exhibit higher catalytic activity than tridentate counterparts because the third coordination atom contends with L-lactide, which decreases activity. Oxygen is the third atom in the tridentate ligand, providing stronger chelation ability with Li and Na than nitrogen or sulfur and occupies the space with which L-lactide is coordinated.

Graphical abstract: Synthesis, characterization and catalytic activity of lithium and sodium iminophenoxide complexes towards ring-opening polymerization of l-lactide

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The article was received on 30 Oct 2011, accepted on 12 Jan 2012 and first published on 14 Feb 2012


Article type: Paper
DOI: 10.1039/C2DT12063A
Dalton Trans., 2012,41, 3659-3667

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    Synthesis, characterization and catalytic activity of lithium and sodium iminophenoxide complexes towards ring-opening polymerization of L-lactide

    W. Lu, M. Hsiao, S. C. N. Hsu, W. Peng, Y. Chang, Y. Tsou, T. Wu, Y. Lai, Y. Chen and H. Chen, Dalton Trans., 2012, 41, 3659
    DOI: 10.1039/C2DT12063A

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