Abstract
Some 1,8,15,22-tetraiodophthalocyanine complexes of cobalt (3-ICoPc), nickel (3-INiPc), copper (3-ICuPc) and zinc (3- IZnPc) were synthesized from the corresponding tetraamino substituted metal phthalocyanine complexes using modified Sandmayer’s method. The corresponding 1,8,15,22-tetranitrophthalocyanine complexes of the metals were used as precursors for the synthesis of 1,8,15,22-tetraamino substituted metal phthalocyanines. 1,8,15,22- tetranitrophthalocyanine complexes were in turn synthesized from reaction between 3-nitrophthalic acid with corresponding metal salts. The characterization of bluish green colored complexes was done by elemental analyses, Uvvisible and IR spectroscopy, and magnetic susceptibility measurements in order to check their purity and structural integrity. Measurement of magnetic susceptibility with varying magnetic field strengths revealed that, the magnetic moments are higher than the spin only values and shows the presence of intermolecular cooperative effects.
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