In the case of the ligand 1,4-di(4´,6´-dimethyl-2´-pyridyl)aminophthalazine (PAP46DiMe) only binuclear derivatives were obtained. ###>On a obtenu uniquement des dérivés binucléaires dans le cas du ligand di(diméthyl-4´,6´ pyridyl-2´) aminophthalazine (PAP4DiMe).