The present paper describes about the synthesis and characterization of symmetrical [1, 3, 4] -oxadiazole bridged naphthoxy methelene substituted metal (II) phthalocyanines, which are prepared by condensing tetra carboxy metal (II) phthalocyanine with 2-naphthyloxy acetohydrazide in the presence of suitable solvent and condensing agent. All the newly synthesized complexes are dark green in colour and are characterized by the various analytical techniques like Elemental analysis, Solid state UV-Visible, IR spectroscopic technique and X- ray diffraction studies. Thermo gravimetric studies were also carried to evaluate the thermal stability of the synthesized complexes.The Q band of the electronic spectra for the symmetrically functionalized phthalocyanine derivatives are red-shifted compared to those of corresponding parent phthalocyanine molecules due to the presence of substituents at the positions 2, 9, 16, 23 are more effectively involved in the extension of the π– electroncloud delocalization.
