Issue 38, 2014

Heterometallic aluminates: alkali metals trapped by an aluminium aryloxide claw

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

Supplementary files

Article information

Article type
Paper
Submitted
31 Mar 2014
Accepted
06 Jun 2014
First published
06 Jun 2014

Dalton Trans., 2014,43, 14377-14385

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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