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

The treatment of chloridobis(4‐methylthiazolyl)isoindoline]palladium(II) (4‐Mebti)PdCl] with sodium tetrakisbis‐3,5(trifluoromethyl)phenyl]boranate NaBAr^F] in the absence of donor ligands or solvents results in the exclusive formation of the dinuclear cationic complex {(4‐Mebti)Pd}₂Cl]⁺ independent of the stoichiometry of the reactants. The new compound crystallizes either in the space group or in C2/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 Pd²⁺ ion bound in a non‐planar coordination environment. In solution, {(4‐Mebti)Pd}₂Cl]⁺ 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(NCCH₃)]⁺ can be isolated as the pure BAr^F derivative.