Fig. 1. The structure of the triply interlocked catenane Cat-BF4, showing the discrete polyhedrons (a) (the interlocked partner was omitted for clarity) and the space-filling model of the interlocked structure (b). Structures of the interlocked catenanes Cat-BF4 (c) and Cat-I/BF4 (d) filled with BF4– and I– anions in the pockets, respectively; and a view of the hydrogen bonding interactions with I– anions in the outer (e) and central (f) pocket.
