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Tetracopper σ‐Bound μ ‐Acetylide and ‐Diyne Units Stabilized by a Naphthyridine‐based Dinucleating Ligand

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [3];  [4];  [2]
  1. 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
  2. Department of Chemistry University of California Berkeley USA, Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
  3. Department of Chemistry University of California Berkeley USA
  4. 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

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Tetracopper σ‐Bound μ ‐Acetylide and ‐Diyne Units Stabilized by a Naphthyridine‐based Dinucleating Ligand
Journal Article · Wed Sep 27 00:00:00 EDT 2023 · Angewandte Chemie · OSTI ID:2006714

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