Electrochemical Behaviour and Electronic Absorption of the Metal β- Diketonates Complexes
American Journal of Physical Chemistry
Volume 2, Issue 1, February 2013, Pages: 1-7
Received: Jan. 27, 2013; Published: Feb. 20, 2013
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Mohammed A. Al-Anber, Department of Chemical Science, Faculty of Science, Mu´tah University, 61710 Al-Karak, P.O. Box 7, Jordan; Department of Environmental Health, Faculty of Public Health and Health Informatics, Hail University, Hail, Saudi Arabia
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The electrochemical properties of -diketonate complexes, such as [Co(tta)2(H2O)2], [Ni(tta)2(H2O)2], [Cu(tta)2] and [Zn(tta)2(H2O)2] (tta = deprotonated of 1-thenoyl-4,4,4-trifluoroacetone) have been studied using cyclic voltammetry (CV). Their redox behaviors including oxidation and/ or reduction process for both central atom and tta ligand have been discussed. The cyclic voltammogrammes display one irreversible oxidation peak in a positive potential region, where it appears in the area between + 1.30 and + 1.95 V based on the type of complex. In addition, two reduction peaks are appeared in the negative region potentials, at the region between – 1.06 to – 2.16 V. The irreversible oxidation potential peak of thienyl ring has shifted to the lower positive potential, while the reversibly redox potential peak of the fluorinated--diketone moiety shifts to the higher negative potential compared with non-coordinated H-tta ligand. The spectral properties, energy levels, and energy gap for the respective complexes have been verified with UV-Vis spectrophotometer.
Cyclic Voltammetry, -Diketones, Electronic Spectra, 1-Thenoyl-4,4,4-Trifluoroacetone, Metal, Complex
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Mohammed A. Al-Anber, Electrochemical Behaviour and Electronic Absorption of the Metal β- Diketonates Complexes, American Journal of Physical Chemistry. Vol. 2, No. 1, 2013, pp. 1-7. doi: 10.11648/j.ajpc.20130201.11
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