A Cationic Chlorido‐bridged Palladium(II) Complex of the Sterically Hindered Bis(4‐methylthiazolyl)isoindoline Ligand (4‐Mebti)

The treatment of chlorido[bis(4‐methylthiazolyl)isoindoline]palladium(II) [(4‐Mebti)PdCl] with sodium tetrakis[bis‐3,5(trifluoromethyl)phenyl]boranate Na[BAr F ] in the absence of donor ligands or solvents results in the exclusive formation of the dinuclear cationic complex [{(4‐Mebti)Pd} 2 Cl] + independent of the stoichiometry of the reactants. The new compound crystallizes either in the space group $P{\bar 1}$ or in C 2/ c depending on the amount of co‐crystallized solvent. In both cases, the molecular structure of the dinuclear cation reveals a sterically crowded situation with the Pd 2+ ion bound in a non‐planar coordination environment. In solution, [{(4‐Mebti)Pd} 2 Cl] + reacts with acetonitrile to form the neutral [(4‐Mebti)PdCl] and an equilibrium mixture of different complexes, from which the mononuclear species [(4‐Mebti)Pd(NCCH 3 )] + can be isolated as the pure BAr F derivative.