Fig. 7: Sodium-restrained Octacid4 conformations.

a One pair of linkers that form bidendate coordination with the sodium cation. b Two pairs of linkers that form bidendate coordination with the sodium cation. Left: side view; Right: top view.

a One pair of linkers that form bidendate coordination with the sodium cation. b Two pairs of linkers that form bidendate coordination with the sodium cation. Left: side view; Right: top view.