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A simple recipe for tailored cavities for the recognition of neutral organic guests: just mix difunctional chelate ligands with metal ions having a preferred coordination geometry. Boxes, cylinders, or tetrahedra form in high yields by self‐assembly. Of course it's not quite this easy, but the studies discussed here indicate that this strategy for the construction of macrocyclic hosts has a bright future.
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Christopher A. Hunter (1995) studied this question.
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