Silver(I)–NHC complexes with chalcogenocyanate ligands : synthesis and transfer reactivity

Dodds, Christopher A. and Bain, Gavin and Irving, Craig and Kennedy, Alan R. and Thompson, Ross (2026) Silver(I)–NHC complexes with chalcogenocyanate ligands : synthesis and transfer reactivity. Bulletin of the Chemical Society of Japan, 99 (3). uoag035. ISSN 1348-0634 (https://doi.org/10.1093/bulcsj/uoag035)

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Abstract

The chemistry of N-heterocyclic carbene (NHC) silver(I) complexes has been studied for over 30 years, mainly focusing on halide species, in part due to their ability to act as NHC-transfer reagents. This study reports the first examples of silver(I)–NHC cyanate complexes, [Ag(NHC)(NCO)], with 6 complexes synthesized via 2 complementary methods. The progression to the heavier chalcogenocyanate ligands, thiocyanate and selenocyanate, presents a more complex scenario. The corresponding reactions with thiocyanate salts produce ionic products composed of [Ag(NHC)2]+ and a thiocyanate-containing anion, when the NHC ligands employed are IMes, IXy, SIXy, or IMesBr. In contrast, the deployment of the bulkier SIPr ligand results exclusively in the isolation of the neutral species [Ag(SIPr)(SCN)]. Reactions with potassium selenocyanate lead to degradation, preventing the isolation of any selenocyanate-containing species. Finally, both cyanate and thiocyanate complexes successfully transferred NHC and chalcogenocyanate ligands to gold(I), indicating their versatility as transfer agents.

ORCID iDs

Dodds, Christopher A. ORCID: https://orcid.org/0000-0002-4590-0307

Irving, Craig ORCID: https://orcid.org/0000-0002-9125-5951

Kennedy, Alan R. ORCID: https://orcid.org/0000-0003-3652-6015

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• Item metadata

  Item type:	Article
  ID code:	95827
  Dates:	Date Event 19 March 2026 Published 19 March 2026 Published Online 20 February 2026 Accepted 12 December 2025 Submitted
  Subjects:	Science > Chemistry
  Department:	Faculty of Science > Pure and Applied Chemistry
  Depositing user:	Pure Administrator
  Date deposited:	20 Mar 2026 09:03
  Last modified:	08 Jun 2026 07:40
  URI:	https://strathprints.strath.ac.uk/id/eprint/95827