𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis, Structural Diversity, and Ligand-Transfer Potential of (Carbene)copper(I) Complexes

✍ Scribed by Galmari Venkatachalam; Marion Heckenroth; Antonia Neels; Martin Albrecht

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
457 KB
Volume
92
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

magnified image

Copper(I) complexes comprising different N‐heterocyclic carbene ligands were prepared via in situ deprotonation and metallation. Depending on the wingtip groups on the carbene ligand (alkyl vs. aryl, chelating or monodentate), a variety of different structural motifs were identified, such as a trigonal planar geometry (alkyl wingtips) and an unprecedented see‐saw‐type structure (pyridinyl wingtip groups). While aryl wingtip groups increase the stability of the complexes, alkyl substituents induce rapid demetallation in the presence of moisture. The reactivity of these complexes was used to establish a carbene‐transfer protocol, which is illustrated by the formation of new cyclic thiourea compounds (transfer to sulfur) and new (carbene)ruthenium(II) complexes (transfer to ruthenium). This suggests that (carbene)copper(I) complexes could become valuable alternatives to (carbene)silver(I) complexes for synthesizing (carbene)metal systems via transmetallation.

📜 SIMILAR VOLUMES

Synthesis of Copper(I) Complexes of N-He
Synthesis of Copper(I) Complexes of N-Heterocyclic Carbene–Phenoxyimine/amine Ligands: Structures of Mononuclear Copper(II), Mixed-Valence Copper(I)/(II), and Copper(II) Cluster Complexes
✍ Stevan Simonovic; Adrian C. Whitwood; William Clegg; Ross W. Harrington; Michael 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 804 KB

## Abstract Copper(I) bromide complexes (2a and 2b) of NHC–phenolimine ligand precursors {3‐[(1__R__,2__R__)‐2‐{[1‐(3,5‐di‐__tert__‐butyl‐2‐hydroxyphenyl)meth‐(__E__)‐ylidene]amino}cyclohexyl]‐1‐isopropyl‐4‐phenyl‐3__H__‐imidazol‐1‐ium bromide (1a) and 3‐[(1__R__,2__R__)‐2‐{[1‐(2‐hydroxyphenyl)meth

Polynuclear Copper(I) Complexes with Che
Polynuclear Copper(I) Complexes with Chelating Bis- and Tris-N-Heterocyclic Carbene Ligands: Catalytic Activity in Nitrene and Carbene Transfer Reactions
✍ Cristina Tubaro; Andrea Biffis; Riccardo Gava; Elena Scattolin; Andrea Volpe; Ma 📂 Article 📅 2012 🏛 John Wiley and Sons 🌐 English ⚖ 303 KB 👁 2 views

## Abstract Di‐ and trinuclear complexes of copper(I) bearing bis‐ or tris‐N‐heterocyclic carbene ligands have been prepared and evaluated as catalysts in nitrene transfer reactions from PhI=NTs to unsaturated and saturated substrates (olefin aziridination and C–H bond amidation) and carbene transf

Caro-Cryptands: Tris-carotenoid macrobic
Caro-Cryptands: Tris-carotenoid macrobicyclic ligands–synthesis, crystal structure, and dinuclear copper(I) complexes
✍ Jean-Marie Lehn; Jean-Pierre Vigneron; Itka Bkouche-Waksman; Jean Guilhem; Claud 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 German ⚖ 482 KB

The tris-carotenoid macrobicycles 1 and 2 were obtained in good yields in a one-step macrobicyclisation condensation between the tripode N(CH,CH2NH2), and the polyolefinic dialdehydes 5 and 6. They form dinuclear cryptates by complexation of two Cu' ions. The crystal structure of the tris-carotenoid