Abstract
Enough mechanical stiffness that the metal centers can no longer racemize is provided by the connection of four labile metal centers (AlIII, GaIII, InIII, FeIII) and six achiral bis-catecholate ligands in a rigid tetrahedral assembly (see picture). The resolution and unprecedented kinetic stability of such a chiral supramolecular assembly is reported here for the first time.
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