Photochemistry of Complex Ions. III. Absolute Quantum Yields for the Photolysis of Some Aqueous Chromium(III) Complexes. Chemical Actinometry in the Long Wavelength Visible Region

Reactions Induced by Light

It was found that various organic compounds and inorganic salts added in small concentrations to aqueous solutions increase the quantum yields of photochemical chain ion-radical reactions of the sulfo group substitution for a halogen in halogenated naphthylamine (4-chloro-1 -naphthylamine) and hydroxynaphthalenes (1-bromo-2-hydroxynaphthalene and 4-chloro-2-hydroxynaphthalene). An increase in the quantum yield of the photosubstitution chain reaction of the sulfo group for a halogen on the aromatic ring in the presence of low concentrations of organic compounds and inorganic salts is a phenomenon common to various substrates in both direct and sensitized photolysis. Neither organic compounds nor inorganic salts in low concentrations affect the fluorescence of substrates and the chain length of the substitution reaction. It is suggested that the main effect of small additives on the photochemical chain reaction is due to a change in the reactivity of ionradical pairs, the primary products of a photoinduced electron transfer reaction at the initiation step.

Photochemistry of Complex Ions. III. Absolute Quantum Yields for the Photolysis of Some Aqueous Chromium(III) Complexes. Chemical Actinometry in the Long Wavelength Visible Region

Citations

Reactions Induced by Light

Effect of small additives of organic compounds and inorganic salts on chain photosubstitution for halogen in halogenated naphthalenes

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