Pd/S cooperativity: from stoichiometric activation of Si−H bonds to catalytic hydrosilylation
Year: 2024
Type: article
Abstract: With the aim to explore metal‐ligand cooperation across Pd−S linkages, we designed a quinoline‐based PNS tridentate ligand and prepared Pd(II) complexes thereof. Optimal solubility and stability of the dicationic complex [(PNS)Pd(II)]22+ IV2 were achieved with B(C6F5)4– as counter‐anion. It adopts a thiolate‐bridged dimeric structure with a (PdS)2 core, but readily activates hydrosilanes across the Pd−S linkage. The resulting mononuclear Pd(II) hydride [(PNSSiR3)Pd(II)H]+ VI was characterized by multi‐nuclear NMR spectroscopy and the Si−H bond coordination/activation was studied computationally. Complex IV2 was found to efficiently catalyze the hydrosilylation of alkynes, internal as well as terminal, with good stereo and regioselectivity.
Source: ChemistryEurope
Institutions: Centre National de la Recherche Scientifique, Université Toulouse III - Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée, Institut de Chimie de Toulouse, Université de Pau et des Pays de l'Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4404328176