Macrocyclic silver and gold complexes containing bis (N-heterocyclic carbene) ligand: Synthesis and structural characterization

Silver and gold complexes, [Ag2(L)2](PF6)2 and [Au2(L)2](PF6)2, supported by but-2-yne-1,4-diyl linked bis(N-heterocyclic carbene) ligand have been prepared and structurally characterized. The complexes display novel twisted macrocyclic conformation and weak intramolecular metal–metal interaction. The complexes are intensely emissive in their solid states.

Graphical abstractMacrocyclic silver and gold complexes, [Ag2(L)2](PF6)2 and [Au2(L)2](PF6)2 (L = 1,4-di(N-methylimidazolylidenyl)but-2-yne), have been prepared and structurally characterized.Figure optionsDownload full-size imageDownload as PowerPoint slide