LiBF 4 -Induced Rearrangement and Desymmetrization of a Palladium-Ligand Assembly.

Sylvain SudanFarzaneh Fadaei Tirani Rosario ScopellitiKristina E EbbertGuido H Clever Kay Severin

Published in: Angewandte Chemie (International ed. in English) (2022)

Thirteen palladium-ligand assemblies with different structures and topologies were investigated for the ability to bind lithium ions. In one case, the addition of LiBF 4 resulted in a profound structural rearrangement, converting a dincluclear [Pd 2 L 4 ] 4+ complex into a low-symmetry [Pd 4 L 8 ] 8+ assembly with two binding pockets for solvated LiBF 4 ion pairs. The rearrangement could only be induced by Li + , indicating highly specific host-guest interactions. A structural analysis of the [Pd 4 L 8 ] 8+ receptor revealed a compact structure with multiple intramolecular interactions, reminiscent of what is seen for natural and synthetic foldamers.

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