Abstract: The reactions of methyl radicals with ferric, ferrous, and iron-free deuteroporphyrin have been investigated in neutral and alkaline water-2-propanol mixtures. Steady-state radiolysis of methyl chloride saturated solutions of ferric deuteroporphyrin, or chemical reduction of ferric deuteroporphyrin solutions containing methyl iodide, led to a new species which is spectrophotometrically characterized. The yield (G= 3) and the redox titration (2 ...
