Abstract
Direct irradiation of acetonitrile solutions of Fe(CNCH3)4(CN)2 in both CT and LF bands leads to gradual ligand-solvent substitution and the solvated intermediates Fe(CNCH3)3(NCCH3(CN)2 and Fe(CNCH3)2(NCCH3(CN)2 are formed in two subsequent steps. The quantum yield of the first step of photosolvation (ϕ = 0.5) is independent of the wavelength of irradiation. Benzophenone is a high energy triplet donor for this compound, and sensitizes the photosolvation with a limit quantum yield of 0.56. The results point to the same reactive triplet state for the direct and the sensitized reaction.
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