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. Author manuscript; available in PMC: 2019 Jan 11.
Published in final edited form as: Chem. 2017 Dec 14;4(1):46–93. doi: 10.1016/j.chempr.2017.10.015

Figure 27. Pyrrole-containing macrocycles and their complexes with various anions.

Figure 27

(A) Molecular structures of receptors 64–67.

(B) Schematic representation of the multiple equilibria of the complexes of 67.

(C) The crystal structure of the complex [(C6H5COO)2]2− ⊂ [H266]2+.

(D) The crystal structure of the complex [(Cl2]2− ⊂ [H264]2+.

(E) The crystal structure of the complex [(ClO4)2]2− ⊂ [H264]2+.

(F) The crystal structure of the complex [(BF4)2]2− ⊂ [H265]2+.

All anions encapsulated within the cavities are shown in space-filling form. Color code: C = gray, N = blue, O = red, F = chartreuse yellow, B = peach, and Cl = green.