Abstract
Though apparently a strange structural feature, the (Z)-stilbene unit is in fact a hinge that determines the shape of the title crown ether. Alkali metal ions from Li to Rb are accomodated in the conformation depicted on the right (spheres in the cavity illustrate the relative sizes of the ions); the crown compound shows high lithium selectivity.
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More From: Angewandte Chemie International Edition in English
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