Insights into the Aryl–Aryl Exchange between Palladium and Phosphane Ligands in Pd II Complexes: Preparation of Phthalocyanine‐Containing Phosphonium Salts

At least three phthalocyanine units can be incorporated into phosphonium salts to give compounds such as 1, following unprecedented exchange reactions between phthalocyanine moieties bound to a palladium center and phenyl groups bound to the coordinated phosphane. Preliminary second-order nonlinear optics studies of the phthalocyanine-phosphonium salts have been carried out.