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Anion‐coordination‐driven assembly (ACDA) has proven to be a very effective strategy for the construction of polyhedral structures. Here we demonstrate that variation of the “angle” of the backbone of C3‐symmetric tris‐bis(urea) ligands, from triphenylamine to triphenylphosphine oxide, results in the change of the final construct from an A4L4 tetrahedron to a higher‐nuclearity, A6L6 trigonal antiprism...
An azobenzene‐functionalized bis‐bis(urea) ligand (Lazo) and phosphate anion assemble to give the first photoactive “aniono” constructs, tetrahedron (A4L6) and helicate (A2L3), which readily undergo interconversion through cis‐trans isomerization of the azo group under irradiation/heating. Most strikingly, the tetrahedral cage can accommodate an [18]crown‐6 molecule, which can capture two tetramethylammonium...
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