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Charge separation strategy. (a) Homoleptic arrangements of pyridine and carboxylate donors. (b) Combination of the two leads to structures that are energetically more favored because of charge separation. (c) Example of a 3D supramolecular box obtained using charge separation, as reported by Stang. Homoleptic cages from ligand A and B rearrange to the heteroleptic cage when they are mixed. Adapted from ref (41). Copyright 2010 American Chemical Society.
