Abstract :
The photochemistry of Tris(ethylxanthato) iron(III) was studied in five organic solvents: dimethyl sulfoxide (DMSO), methanol, acetone, ethyl acetate and Benzene .Monochromatic light of wavelength 365 nmwas used for theirradiation process at 25 oC. Uv-visible spectral changes and other observations indicated an intra oxidation-reduction reaction occuring during the photolysis of Fe(etx)3 complex, with homolytic scission of FeS bond. The quantum yield( Phi d), rate of photodecomption and reactivity ratio (k2/k-1) were determined in each solvent. These values always increase as the polarity of the solvent increased and following the order. DMSO Methanol Acetone Ethyl acetate Benzene According to theexperimental results obtained, the mechanism of photodecomption of these complexes under the applied conditions was proposed.
