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PHOTOCHEMICAL STUDY OF TRIS(ETHYLXANTHATO) IRON(III) IN DIFFERENT ORGANIC SOLVENTS | ||
| Journal of Al-Nahrain University - Science | ||
| Article 1, Volume 12, Issue 4, 2009, Pages 25-30 | ||
| Author | ||
| Nasser Shalan | ||
| 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 nm was used for the irradiation 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 Fe-S bond. The quantum yield (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 the experimental results obtained, the mechanism of photodecomption of these complexes under the applied conditions was proposed. | ||
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