Ríos Moreno, PabloSee, Matthew S.Handford, Rex C.Cooper, Jason K.Don Tilley, T.2024-05-102024-05-102023Ríos Moreno, P., See, M.S., Handford, R.C., Cooper, J.K. y Don Tilley, T. (2023). Tetracopper σ-Bound μ-Acetylide and -Diyne Units Stabilized by a Naphthyridine-based Dinucleating Ligand. Angewandte Chemie - International Edition, 62 (45), e202310307. https://doi.org/10.1002/anie.202310307.1433-78511521-3773https://hdl.handle.net/11441/158088Reactions of a dicopper(I) tert-butoxide complex with alkynes possessing boryl or silyl capping groups resulted in formation of unprecedented tetracopper(I) μ-acetylide/diyne complexes that were characterized by NMR and UV/Vis spectroscopy, mass spectrometry and single-crystal X-ray diffraction. These compounds possess an unusual μ4-η1:η1:η1:η1 coordination mode for the bridging organic fragment, enforced by the rigid and dinucleating nature of the ligand utilized. Thus, the central π system remains unperturbed and accessible for subsequent reactivity and modification. This has been corroborated by addition of a fifth copper atom, giving rise to a pentacopper acetylide complex. This work may provide a new approach by which metal-metal cooperativity can be exploited in the transformation of acetylide and diyne groups to a variety of substrates, or as a starting point for the controlled synthesis of copper(I) alkyne-containing clusters.application/pdf7 p.engAttribution-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nd/4.0/AcetylideAlkynesNaphthyridineTetracopperσ-Bondinginfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1002/anie.202310307