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Título
Multifaceted role of silver salts as ligand scavengers and different behavior of nickel and palladium complexes: beyond halide abstraction
Año del Documento
2023
Editorial
Royal Society of Chemistry
Descripción
Producción Científica
Documento Fuente
Dalton Trans., 2023, 52, 1425–1432
Zusammenfassung
The reaction of [NiArBr(PPh3)2] with AgBF4 brings about the abstraction of both the halide and phosphine from the nickel center by silver. When the reaction is carried out in CH2Cl2/toluene a mixture of the cat- ionic aquo derivatives [NiAr(H2O)(PPh3)2]BF4 (2) and [NiAr(H2O)2(PPh3)]BF4 (3) is formed, along with AgBr and [Ag(PPh3)n]BF4. When the same reaction is carried out in acetone as the solvent, it leads to the com- pletely different complex [NiAr(κ2-O, O–MeC(O)CH2C(OH)Me2)(PPh3)] (5), bearing a chelating ligand formed by the aldol self-condensation of acetone. Phosphine abstraction by silver is less favorable for the analogous palladium(II) complexes and only occurs if a large excess of AgBF4 is used. Thus, silver salts can be safely used as halide scavengers for palladium derivatives. However, the generation of cationic Ni com- plexes from neutral precursors by halide extraction with a silver salt may produce naked species, different than those expected, and highly reactive in certain media
Materias (normalizadas)
Chemistry
ISSN
1477-9226
Revisión por pares
SI
Patrocinador
MICINN (AEI, PID2019-111406GB-I00)
Junta de Castilla y León- FEDER (VA224P20)
Junta de Castilla y León- FEDER (VA224P20)
Version del Editor
Idioma
eng
Tipo de versión
info:eu-repo/semantics/draft
Derechos
openAccess
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