The fluoride method: access to silver(III) NHC complexes

Pueyo, J. (Universidad de Zaragoza) ; Joven-Sancho, D. ; Martín, A. ; Menjón, B. ; Baya, M. (Universidad de Zaragoza)

Resumen: We have synthesized the first silver(III) carbene complexes, (CF3)3Ag(NHC), by direct reaction of the silver(III) fluoride precursor complex [PPh4][(CF3)3AgF] with different imidazolium salts. This novel methodology circumvents the use of free NHC molecules. The silver(III) carbene complexes thus prepared are unprecedented and show remarkable thermal stabilities. They display square-planar or square-pyramidal geometry. Following our calculations, the electronic structure of a model representative complex exhibits Inverse Ligand Field (ILF). The compounds reported herein are synthetic analogues of the elusive difluorocarbene and carbonyl species proposed as intermediates in the acidic decomposition of [Ag(CF3)4]−. The synthetic procedure reported is envisaged to enable access to carbene complexes of other late transition-metals in high oxidation states.

Idioma: Inglés

DOI: 10.1002/chem.202303937

Año: 2024

Publicado en: Chemistry - A European Journal 30, 12 (2024), e202303937 [5 pp.]
ISSN: 0947-6539

Financiación: info:eu-repo/grantAgreement/ES/DGA/E17-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-122869NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-078732

Tipo y forma: Article (Published version)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)