The synthesis, spectroscopic and electrochemical properties of the following octa-benzothiazole substituted metal-free (4), cobalt(II) (5) zinc (II) (6) phthalocyanines are reported for first time. novel have been characterized by FT-IR, NMR spectroscopy, electronic spectroscopy mass spectroscopy. Voltammetric analysis benzothiazole group were determined cyclic (CV) square wave voltammetry (SWV...