Indolyl Phosphine Nickel(II) Fluorido Complexes: Synthesis and Intermediates in <i>Suzuki–Miyaura</i> Cross‐Coupling Reactions

The C−F bond activation of pentafluoropyridine and 2,3,5,6-tetrafluoropyridine at [Ni(cod)2] (cod=1,5-cyclooctadiene) in the presence phosphine PPh2(Ind) (Ind=3-methyl-2-indolyl) led to formation nickel(II) fluorido bis(phosphine) complexes trans-[Ni(F)(2-C5NF4){PPh2(Ind)}2] trans-[Ni(F)(2-C5HNF3){PPh2(Ind)}2]. are characterized by intramolecular hydrogen bonds between NH group ligands ligand. Stochiometric model reactions with PhB(OH)2 revealed that former can be considered as intermediates Suzuki–Miyaura cross coupling reactions. Catalytic experiments were attempted using 10 mol-% catalyst activities complex compared ones an analogous complex, bearing PPh3 instead ligands. latter exhibited a somewhat lower catalytic activity suggesting slight influence H-bonds outer coordination sphere.