Novel Ti(IV) and Zr(IV) complexes and their application in the ring-opening polymerisation of cyclic esters

E L Whitelaw, M D Jones, M F Mahon, G Kociok-Kohn

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

A series of group 4 amine tris(phenolate) complexes have been prepared and characterised by single crystal X-ray diffraction and multinuclear NMR spectroscopy. It was found that the ligands afforded monomeric titanium complexes and dimeric zirconium structures in the solid-state. The complexes have been tested for the ring-opening polymerisation of rac-lactide under both solution and melt conditions, which showed varying degrees of selectivity and control, with PDIs in the range of 1.09-2.07. The initiators were also tested for the production of copolymers containing rac-lactide and isosorbide. From NMR spectroscopic analysis and MALDI-TOF mass spectrometry the isosorbide is incorporated into the polymer. The complexes were also screened for the ring-opening polymerisation of 1,3-dioxan-2-one to produce a polycarbonate with good conversions (24-99%).
Original languageEnglish
Pages (from-to)9020-9025
Number of pages6
JournalDalton Transactions
Volume41
DOIs
Publication statusPublished - 2009

Fingerprint Dive into the research topics of 'Novel Ti(IV) and Zr(IV) complexes and their application in the ring-opening polymerisation of cyclic esters'. Together they form a unique fingerprint.

  • Cite this