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September 24, 2005Inorganic Chemistry228 citations

Comparative Study of the Coordination Chemistry and Lactide Polymerization of Alkoxide and Amide Complexes of Zinc and Magnesium with a β-Diiminato Ligand Bearing Ether Substituents

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MCMalcolm H. ChisholmJGJudith C. GallucciKPKhamphee Phomphrai

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Abstract

A series of beta-diiminato complexes of the form (BDI-3)MX where (BDI-3) = CH(CMeNC(6)H(4)-2-OMe)(2); M = Zn, Mg; X = O(i)()Pr, O(t)()Bu, or N(SiMe(3))(2) has been synthesized. The (BDI-3) ligand is bidentate in (BDI-3)ZnN(SiMe(3))(2) and tetradentate in (BDI-3)MgN(SiMe(3))(2). The alkoxide complexes are shown to be active for lactide polymerization. Polymerization of rac-lactide with (BDI-3)ZnO(i)Pr gives a moderate preference for heterotactic PLA. Polymerization of rac-lactide with (BDI-3)MgO(t)Bu(2) shows a slight preference for heterotactic PLA in CH(2)Cl(2) but is highly stereoselective in THF in the production of heterotactic PLA.

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Cite This Study

Chisholm et al. (2005) studied this question.

synapsesocial.com/papers/6a62dd2123e67419360944cfhttps://doi.org/10.1021/ic048363d
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