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LaIII and ZnII cooperatively template a metal–organic capsule

DOI: 10.1021/jacs.0c09991 DOI Help

Authors: Dong Yang (University of Cambridge; Northwest University) , Jake L. Greenfield (University of Cambridge) , Tanya K. Ronson (University of Cambridge) , Larissa K. S. Von Krbek (University of Cambridge) , Le Yu (Northwest University) , Jonathan R. Nitschke (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of The American Chemical Society

State: Published (Approved)
Published: November 2020
Diamond Proposal Number(s): 21497

Abstract: An organic subcomponent was designed with 2-formyl-8-aminoquinoline and triazole-pyridine ends. The relative orientations and geometries of these two ends enabled this subcomponent to assemble together with ZnII and LaIII cations to generate a heterobimetallic tetrahedral capsule. The LaIII cations each template three imine bonds that hold together a 3-fold-symmetric metallo-ligand, defining the center of each tetrahedron face. The ZnII cations occupy the other ends of these C3 axes, defining the vertices of the tetrahedron. This is the first example where subcomponent self-assembly brought into being the faces of a polyhedron, as opposed to the vertices. Host–guest studies show positively cooperative binding toward ReO4–, the encapsulation of which also resulted in the quenching of capsule fluorescence.

Journal Keywords: Lanthanides; Anions; Metals; Cavities; Fluorescence

Subject Areas: Chemistry

Instruments: I19-Small Molecule Single Crystal Diffraction

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