Triamine and Tetramine Edge-Length Matching Drives Heteroleptic Triangular and Tetragonal Prism Assembly

Abstract

Heteroleptic metal−organic capsules, which incorporate more than one type of ligand, can provide enclosed, anisotropic interior cavities for binding low-symmetry molecules of biological and industrial importance. However, the selective selfassembly of a single mixed-ligand architecture, as opposed to the numerous other possible self-assembly outcomes, remains a challenge. Here, we develop a design strategy for the subcomponent self-assembly of heteroleptic metal−organic architectures with anisotropic internal void spaces. Zn 6 Tet 3 Tri 2 triangular prismatic and Zn 8 Tet 2 Tet′ 4 tetragonal prismatic architectures were prepared through careful matching of the side lengths of the tritopic (Tri) or tetratopic (Tet, Tet′) and panels.

Formkomplementäre Multikomponenten Assemblierung von Niedrigsymmetrischen Co(III)Salphen Koordinationskäfigen

“…[39][40][41][42][43] Ribas, Reek und Mitarbeiter erzeugten heteroleptische Quader durch Sättigung von Metallo-Makrozyklen mit verbrückenden Liganden. [44] Schließlich wurde die formkomplementäre Assemblierung (shape-complementary assembly, SCA) von zueinander passenden Ligandgerüsten von Fujita, [45] Nitschke, [46] Mukherjee, [47,48] Chand, [49] Zhou, [50] Sun [51] und uns [52,53] eingesetzt, um definierte Systeme mit zwei unterscheidbaren Liganden zu synthetisieren. Allerdings gibt es nur sehr wenige Beispiele, bei denen eine integrative, metallvermittelte Selbstsortierung aus drei oder mehr organischen Komponenten zu einem einzigen Produkt erreicht wurde.…”

Shape‐Complementary Multicomponent Assembly of Low‐Symmetry Co(III)Salphen‐Based Coordination Cages

“…[39][40][41][42][43] Ribas, Reek and coworkers generated heteroleptic cuboids by saturating metallo-macrocycles with bridging ligands. [44] Finally, shape-complementary assembly (SCA) between matching ligand scaffolds has been employed by Fujita, [45] Nitschke, [46] Mukherjee, [47,48] Chand, [49] Zhou, [50] Sun [51] and us [52,53] to construct various two-ligand assemblies with a defined structure. However, very few examples exist where integrative, metal-mediated self-sorting into a single product was achieved from three or more organic components.…”