DESIGN AND SYNTHESIS OF BI-METALLIC PORPHYRIN ARRAYAbstract
Porphyrins are ever-present large class of naturally occurring macrocyclic compounds with many significant biological representatives comprising heme and chlorophyll. Novel bi-metallic porphyrins derived from [5-(4-hydroxyphenyl)-10,15,20-tri(4-methyl phenyl) porphyrin] and salicylideneamino-2-(N,N-dimethylamino) ethane copper (II) perchlorate was obtained in good yields. The results from various physico-chemical studies reveal a change in the geometry of the copper environment after coordination at the periphery of the porphyrin. The EPR of monocuperated metalloporphyrins have signals of copper with planar geometry and lacks the lines corresponding to peripheral metal due to dipolar broadening. Weak interaction between the metal centers is clear from nickel porphyrin.