Tetracopper σ‐Bound μ ‐Acetylide and ‐Diyne Units Stabilized by a Naphthyridine‐based Dinucleating Ligand
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica Centro de Innovación en Química Avanzada (ORFEO-CINQA) CSIC and Universidad de Sevilla 41092 Sevilla Spain, Department of Chemistry University of California Berkeley USA
- Department of Chemistry University of California Berkeley USA, Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Department of Chemistry University of California Berkeley USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
Abstract
Reactions 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 μ 4 ‐ η 1 : η 1 : η 1 : η 1 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.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2006704
- Alternate ID(s):
- OSTI ID: 2203996
OSTI ID: 2280922
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 45 Vol. 62; ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English