Reactions of Chelate Complexes with Macrocyclic Ligands. Octaphenyltetraazaporphine and Its Derivatives

Coordination of three azaporphines, namely, octaphenyltetraazaporphine (I), octa(4-nitrophenyl)-tetraazaporphine (II), and octa(4-bromophenyl)-tetraazaporphine (III) with some chelate salts of copper and zinc (hydroxyquinolate (IV), -nitroso--naphtholate (V), glycinate (VI), alaninate (VII), valinate (VIII), leucinate (IX), and glutaminate (X)) in DMSO were studied. As in the case with acetates, compound I was found to coordinate chelate salts according to the monomolecular mechanism and to give amino complex with the bridging nitrogen atom. Compound II reacts with all indicated salts according to the bimolecular mechanism almost instantaneously, except for VII. In the same way, reactions of III are also instantaneous, even with VII. Coordination of I with Zn(II) chelate salts proceeds at the rates higher than with acetate.