Figure 8.

X-ray crystal structures of various metal-ionophore complexes discussed in this Review. (A) Structures of the oxine complexes of In³⁺, Zr⁴⁺, and Ga³⁺ (structures from refs (127 and 128)) and the corresponding metal–ligand bond lengths of each complex (M = metal). (B) Structures of the tropolone complexes of In³⁺ and Ga³⁺,¹²⁹ and the corresponding metal–ligand bond lengths of each complex. Structures of (C) In(acetylacetonate)₃¹³⁰ and (D) Cu-PTSM.¹³¹ X-ray structure visualization and data analysis was performed using Mercury CSD.¹³²