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(A) Molecular structures of receptors 62 and 63.
(B) The crystal structure of the complex [(Cl2]2−⊂ [H262]2+.
(C) The crystal structure of the complex [(Cl2]2−⊂ [H263]2+.
All anions encapsulated within the cavities are shown in space-filling form. Color code: C = grey, N = blue, O = red, F = chartreuse yellow and Cl = green. Solvent molecules outside the cavities are omitted for clarity.
