Synthesis of Zn(II) and Al(III) complexes of diaminocyclohexane derived ligands and their exploitation for the ring opening polymerization of rac-lactide

Sarah Kirk, Paul McKeown, Mary Mahon, Gabriele Kociok-Kohn, Timothy Woodman, Matthew Jones

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Two series of ligands based on diaminocyclohexane (DACH) have been prepared and successfully complexed to Al(III) and Zn(II) metal centres. Solution and solid-state studies reveal a tendency to form mono- or bis-ligated forms depending on the steric bulk of the ligand. These complexes have been tested for their ability to ring open rac-lactide. Al(III) based complexes generally gave atactic PLA after a polymerization time of 1-2 days. The Zn(II) complexes, were found to be more active and furnished PLA with a slight heterotactic bias.
Original languageEnglish
Pages (from-to)5417-5426
JournalEuropean Journal of Inorganic Chemistry
Issue number45
Publication statusPublished - 8 Dec 2017


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