Structural diversity in the assembly of helicate-type nickel(II) complexes with enantiopure bis(beta-diketonate) ligands.


The tartaric acid derived bis(beta-diketonate) ligand L affords either 2:3 or 3:2 ligand:metal complexes with nickel(II) ions depending on the stoichiometry of the components; the two complexes possess different electronic and geometric properties. 


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