LiBF4‐Induced Rearrangement and Desymmetrization of a Palladium‐Ligand Assembly. (13th April 2022)

• Record Type: Journal Article
• Authors: Sudan, Sylvain; Fadaei‐Tirani, Farzaneh; Scopelliti, Rosario; Ebbert, Kristina E.; Clever, Guido H.; Severin, Kay
• Is Part Of: Angewandte Chemie. Volume 134:Number 24(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-04-13
• Subjects: Cages -- Palladium -- Self-Assembly -- Supramolecular Chemistry -- Symmetry; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202201823
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Thirteen palladium‐ligand assemblies with different structures and topologies were investigated for the ability to bind lithium ions. In one case, the addition of LiBF4 resulted in a profound structural rearrangement, converting a dincluclear [Pd2 L4 ] 4+ complex into a low‐symmetry [Pd4 L8 ] 8+ assembly with two binding pockets for solvated LiBF4 ion pairs. The rearrangement could only be induced by Li +, indicating highly specific host–guest interactions. A structural analysis of the [Pd4 L8 ] 8+ receptor revealed a compact structure with multiple intramolecular interactions, reminiscent of what is seen for natural and synthetic foldamers. Abstract : Template‐induced complexity: LiBF4 induces the rearrangement of a homoleptic Pd2 L4 complex into a Pd4 L8 assembly. The complex shows a folded, highly compact structure, with a low apparent symmetry and two highly specific binding pockets.