Unexpected Formation of Neutral Alkyl-Ni(II) Complexes Bearing Unsymmetrical <i>C</i>,<i>N</i>,<i>N</i>'-Pincer Iminopyrrolyl Ligands via Intramolecular C-H Bond Activation: A Distinct Type of Single-Component Ethylene Polymerization Catalysts.

ABSTRACT: During the development of neutral aryl-nickel(II) triphenylphosphine complexes bearing bidentate 5-aryl-2-(N-aryl)formiminopyrrolyl ligands as single-component ethylene polymerization catalysts, an unexpected intramolecular C-H activation was observed. Reaction of sodium salts of ligand precursors 5-(2,6-Me₂C₆H₃)-2-(N-2,6-R₂C₆H₃)formiminopyrrole (R = Me I, iPr II, 3,5-(CF₃)₂C₆H₃ III) with trans-[Ni(Ar)(PPh₃)₂Cl] (Ar = o-C₆H₄Cl or C₆H₅) afforded unsymmetrical tridentate C,N,N'-pincer iminopyrrolyl nickel(II) complexes [Ni{κ³C,N,

SUBMITTER: Figueira CA 

PROVIDER: S-EPMC12818750 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature