Photochemical Study of Cobalt (II) in Dimethyl Sulfoxide, Simethylformamide and Chloroform Solvents | ||
| Journal of Al-Nahrain University - Science | ||
| Article 1, Volume 19, Issue 3, September 2016, Pages 48-52 | ||
| Authors | ||
| Farah Ibrahim; Dheaa Zageer; Duha Fadhil; Zainab Hussain; Hadeel Adil; Emad Yousif | ||
| Abstract | ||
| The photochemistry of chelate complex 2-(6-methoxynaphthalen-2-yl) propanoic acid cobalt (II) Co(L)2 was studied in three polar aprotic solvents: Dimethyl sulfoxide (DMSO), Dimethylformamide (DMF) and chloroform (CHCl3). Monochromatic light of wavelength 311 nm was used for the irradiation process at 25oC. Uv-visible spectral changes indicated an intra oxidation-reduction reaction occuring during the photolysis of Co(L)2 complex, with homolytic scission of Co-L bond. The quantum yield (d), rate of photodecomposition and reactivity ratio (k2/k-1) was determined in each solvent. These values always increase as the polarity of the solvent increases and follow the order: DMSO > DMF > CHCl3 The mechanism of photodecomposition of this complex under the applied conditions was proposed. | ||
| Keywords | ||
| Photodecomposition; DMSO; DMF; Chloroform | ||
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