Abstract: Four new hexamethyl tetraaza macrocyclic complexes of Co(II) and Mn(II) were synthesized by template method. These were characterized by elemental analysis, cyclic voltammetry, UV and IR spectroscopic methods. All of these were used for the catalytic oxidation of hydroquinones. The oxidation reactions were carried out in the presence as well as in the absence of axial bases. The results were also compared with the blank experiments. Co(II)-A macrocyclic complex was found to be the most efficient catalyst for the oxidation reaction. The catalytic efficiency, however, also depends on the substituents in substrate hydroquinone.
Keywords: Tetraaza macrocyclic complexes, catalysis.
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