Insights into the Aryl-Aryl Exchange between Palladium and Phosphane Ligands in PdII Complexes: Preparation of Phthalocyanine-Containing Phosphonium Salts

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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.