Bis(mandelato)borate [B(Man)2](-) (R- or S-) anions are simply prepared and appear widely effective for resolution of racemic cations. Three examples demonstrate their scope; the alkaloid tetrahydropalmatine (THP), 1,2-diaminopropane (1,2-dap) and the metal-organic complex [Co(phen)3](3+) are readily resolved, either by a facile one-pot procedure, or via counter-ion metathesis.

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Na 2 CO 3 and oxydiacetic acid or thiodiacetic acid, respectively. Complex 1 is a one-dimensional polymer with a planar bridging oxydiacetate ligand in a meridional disposition; whereas 2 is a monomer containing the typical tridentate thiodiacetate ligand with a facial configuration. Both are, as far as we know, the first structural determinations of Mg-oda and Mg-tda complexes [1].