Scheme 1.
Chemical synthesis of: (1) 5,10,15,20-Tetrakis(4-ethylphenyl)porphyrin and metal-derivatives, (2) Zn (II), (3) Sn (IV), (4) Mn (III), (5) Ni (II), (6) Al (III), (7) V (III). Into scheme, X means Cl−.
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