Issue 25, 2024

Coinage metal-ethylene complexes of sterically demanding 1,10-phenanthroline ligands

Abstract

Phenanthroline-based ligands with bulky aryl groups flanking the metal binding pocket enabled the synthesis and detailed investigation of ethylene complexes of copper(I), silver(I), and gold(I), including structural data of [{2,9-bis(2,4,6-triisopropylphenyl)-1,10-phenanthroline}M(C2H4)][SbF6] (M = Cu, Ag, Au), Additionally, a related copper(I)-ethylene complex with a highly fluorinated ligand is also reported. Gold(I) affects the ethylene moiety significantly as evident from the notable upfield coordination shifts of ethylene carbon signals in the NMR and lengthening of the ethylene C[double bond, length as m-dash]C bond length. Silver(I) forms the weakest bond with ethylene in this series of isoleptic, group 11 metal-ethylene complexes. Preliminary catalytic investigations underscore the potential of copper complexes, particularly those with weakly coordinating supporting ligands, as effective catalysts for C(sp3)–H functionalization through trifluoromethyl carbene insertion.

Graphical abstract: Coinage metal-ethylene complexes of sterically demanding 1,10-phenanthroline ligands

Supplementary files

Article information

Article type
Paper
Submitted
19 mar 2024
Accepted
18 apr 2024
First published
19 apr 2024

Dalton Trans., 2024,53, 10426-10433

Coinage metal-ethylene complexes of sterically demanding 1,10-phenanthroline ligands

D. V. Karade, V. Q. H. Phan and H. V. R. Dias, Dalton Trans., 2024, 53, 10426 DOI: 10.1039/D4DT00822G

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