Abstract
A pair of diastereomeric salen cavitands and their uranyl complexes combine a chiral (R,R) salen bridge and an inherent chiral tris-bridged quinoxaline cup within the same molecule. Whereas the free ligands show a preference for the same enantiomer of an α-amino acid pair, the corresponding UO(2) complexes display opposite enantiodiscrimination and exceptionally high enantioselectivities (K(D)/K(L) = 26.4).
MeSH terms
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Amino Acids / chemistry*
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Ethers, Cyclic / chemistry*
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Ethylenediamines / chemistry*
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Molecular Conformation
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Organometallic Compounds / chemistry*
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Quaternary Ammonium Compounds / chemistry*
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Resorcinols / chemistry*
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Stereoisomerism
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Uranium / chemistry*
Substances
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Amino Acids
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Ethers, Cyclic
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Ethylenediamines
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Organometallic Compounds
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Quaternary Ammonium Compounds
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Resorcinols
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cavitand
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Uranium
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disalicylaldehyde ethylenediamine