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- W2332391226 endingPage "6836" @default.
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- W2332391226 abstract "The reaction of racemic SalBinap ligand, (±)-H2(ONN*OMe), with InCl3 and excess NaOEt generated a mixture of two dinuclear compounds [(μ–κ2-ONN*OMe)In(μ-OEt)]2 (1a) and [κ4-ONN*OMe)In(μ-OEt)]2 (1b), which were isolated and fully characterized. Polymerization of racemic lactide with 1a and 1b was slow in refluxing THF and showed only modest stereoselectivity. Catalyst 1b displayed better control than 1a, with the experimental molecular weights of the resulting poly(lactic acid) in agreement with the expected values. The higher-than-expected molecular weights observed in polymers formed by 1a were due to partial initiation of the catalyst. The reaction of (±)-H2(ONN*OtBu) with InCl3 yielded (κ4-ONN*OtBu)InCl (2); however, further reactivity of the compound formed a mixture of products. An attempt to prevent aggregation by reacting (±)-H2(ONN*OMe) with InCl3 and excess NaOiPr yielded an intractable mixture, including [(μ–κ2-ONN*OMe)In]2(μ-Cl)(μ-OH) (3). The thermal stabilities of compounds 1a and 1b under polymerization conditions were investigated. Examination of the polymerization behavior of complexes 1a and 1b and the reaction equilibrium between the two illustrates the importance of aggregation in indium salen complexes compared to their aluminum counterparts." @default.
- W2332391226 created "2016-06-24" @default.
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- W2332391226 date "2014-06-10" @default.
- W2332391226 modified "2023-10-10" @default.
- W2332391226 title "Role of Aggregation in the Synthesis and Polymerization Activity of SalBinap Indium Alkoxide Complexes" @default.
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- W2332391226 doi "https://doi.org/10.1021/ic500647j" @default.
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