Issue 43, 2021

Ligand-based control of nuclearity in (NHC)gold(i) sulfides

Abstract

N-Heterocyclic carbene (NHC) ligands support gold(I) sulfide complexes of varying nuclearity and charge. For sterically undemanding ligands, gold(I) chlorides react with sulfide to form trigold μ3-sulfido cations as the first observed products. The ligand IMes [1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] supports a monomeric cation, whereas the ICy-(1,3-dicyclohexylimidazol-2-ylidene-) supported cation crystallises as a dimer linked through an aurophilic interaction. The more sterically demanding IDipp [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene] supports a terminal hydrosulfide, a (μ-hydrosulfido)digold cation, and a μ3-sulfido cation. Use of the expanded-ring NHC 7Dipp [1,3-bis(2,6-diisopropylphenyl)-4,5,6,7-tetrahydro-1,3-diazepin-2-ylidene] allows the isolation of a neutral digold sulfide.

Graphical abstract: Ligand-based control of nuclearity in (NHC)gold(i) sulfides

Supplementary files

Article information

Article type
Paper
Submitted
06 Aug 2021
Accepted
12 Oct 2021
First published
13 Oct 2021

Dalton Trans., 2021,50, 15721-15729

Ligand-based control of nuclearity in (NHC)gold(I) sulfides

C. M. Sato, R. K. Walde, J. Bacsa, A. J. Jordan and J. P. Sadighi, Dalton Trans., 2021, 50, 15721 DOI: 10.1039/D1DT02616J

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