Abstract

This work describes various coordination modes of aluminum complexes bearing amido-pyridinate and amido-benzene ligands. Utilizing pendant donating groups to switch the coordination behaviours of aluminum complexes and their catalytic activities. Noticeably, these Al complexes containing the methoxy group markedly showed reactivities in ring-opening polymerization of ε-caprolactone. Among them, complex 3 with the methoxy group coordinated to the metal center exhibited higher performance with lower catalyst loading at room temperature than other related amido aluminum complexes in literature.

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