METAL-COMPLEXES WITH TETRAPYRROLE LIGANDS .64. ELECTROPHORESIS OF WATER-SOLUBLE PORPHYRINS AND THEIR METAL-COMPLEXES

Gel electrophoresis is described as a new method for the characterisat ion of water-soluble tetraarylporphyrins and their metal complexes. Th e migration of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin, 5,10,1 5,20-tetrakis(4-carboxyphenyl)porphyrin, 5,10,15,20-tetrakis(N-methylp yridinio)porphyrin, and of several of their complexes containing Zn, C u, V, Ni, Ce, Mn, Mo, W, Re, Os and Ta ions has been studied. The sepa ration of tri- and tetrasulphonated tetraphenylporphyrin or tri- and t etramethylated tetrapyridylporphyrin has been achieved. The behaviour of metal porphyrinates in water, e.g. axial hydration and formation of inner salts or ion pairs, can be studied by comparison of migration d istances.