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Issue 38, 2014
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Heterometallic aluminates: alkali metals trapped by an aluminium aryloxide claw

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Abstract

A series of heterometallic aluminium–alkali metal species [AlMMe2{2,6-(MeO)2C6H3O}2]n have been isolated for lithium, sodium and potassium. These compounds can be generated by the reaction of [AlMe2{2,6-(MeO)2C6H3O}]2 with the metallated phenol [M{2,6-(MeO)2C6H3O}]n or through the reaction of the mixture of AlMe3 and the appropriate alkali metal alkyl base with two equivalents of 2,6-dimethoxyphenol. In the heterometallic species obtained, the {AlMe2{2,6-(MeO)2C6H3O}2} moiety is observed and could be described as a claw which fixes the alkali ion by the phenoxide oxygen atoms while the methoxy groups help to stabilize their coordination sphere. All compounds have been characterized by NMR spectroscopy and X-ray diffraction methods. Catalytic studies reveal that these compounds are active in ring-opening polymerization of L-lactide.

Graphical abstract: Heterometallic aluminates: alkali metals trapped by an aluminium aryloxide claw

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Supplementary files

Article information


Submitted
31 Mar 2014
Accepted
06 Jun 2014
First published
06 Jun 2014

Dalton Trans., 2014,43, 14377-14385
Article type
Paper
Author version available

Heterometallic aluminates: alkali metals trapped by an aluminium aryloxide claw

M. T. Muñoz, T. Cuenca and M. E. G. Mosquera, Dalton Trans., 2014, 43, 14377
DOI: 10.1039/C4DT00952E

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