Novel organoaluminium (and gallium) carboxylate-bridged ring systemsElectronic supplementary information (ESI) available: full spectroscopic data and elemental analyses for all new compounds. See http://www.rsc.org/suppdata/cc/b1/b106113p/
Abstract
Treatment of the Schiff-base ligand [3,5-But2-2-(OH)C6H2CHNC6 H4-2-(CO2H)] with either Me3Al, Me2AlCl or Me3Ga affords 16-membered macrocyclic tetramers containing both four- and six-coordinate metal centres.