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
Views 3184 Downloads 141
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
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.
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.
P. A. Vigato, V. Peruzzo, and S. Tamburini, "The evolution of β-diketone or β- diketophenol ligands and related complexes", Coord. Chem. Rev., 253 (2009) 1099-1201.
O.M. Yaghi, M. O’Keeffe, N.W. Ockwig, H.K. Chae, M. Eddaoudi, and J. Kim, "Reticular Synthesis and the Design of New Materials’’, Nature, 423 (2003) 705-714.
S. Kitagawa, R. Kitaura, and S.I. Noro, "Functional Porous Coordination Polymers" Angew Chem, Int. Ed., 43 (2004) 2334-2375.
B. Zhao, X.Y. Chen, P. Cheng, D.Z. Liao, S.P. Yan, and Z.H. Jiang, "Coordination Polymers Containing 1D Channels as Selective Luminescent Probes’’, J. Am. Chem. Soc., 126 (2004) 15394-15395.
Y.-B. Dong, R.C. Layland, N.G. Pschirer, M.D. Smith, U.H.F. Bunz, and H.-C. zur Loye, "New Crystalline Frameworks Formed from 1,2-Bis(4-pyridyl)ethyne and Co(NO3)2: Interpenetrating Molecular Ladders and an Un-expected Molecular Parquet Pattern from T-Shaped Building Blocks’’, Chem. Mater., 11 (1999)1413–1415.
I. A. Baidina, P. A. Stabnikov, S. A. Gromilov, and I. K. Igumenov, "Crystal structure and thermal investigation of bis-(1-thenoyl-4,4,4-trifluorobutan-1,3-dionato) lead(II)", J. Struct. Chem. 46 (2005) 328-333.
M. Al-Anber, H. Daoud, H. Lang, T. Ruffer, 3D-supermolecular structure and electronic absorption of uranyl βdiketone [UO2(tfa)2(L)] (L = H2O, OHCH2CH3) complex. J. Molecular Structure. 997 (2011) 1-6.
For [Cu(tba)2]: M. Al-Anber, H. Daoud, T. Ruffer, P. Ecocord , and H. Lang, "Synthesis, Crystal Structure and Spectroscopic Studies of [Cu(tba)2] Complex (tba = depro-tonated of 3-benzoyl-1.1.1-trifluoro-acetone)", Arabian J. Chem., xxx (2012) xxx, DOI: 10.1016/j.arabjc.2012.04.048. For [Cu(tta)2]: M. Al-Anber, P. Ecorchard, T. Ruffer, and H. Lang, J. Saud. Chem. Soc. (2012) Submitted for publication.
M. Al-Anber, P. Ecorchard, T. Rüffer and H. Lang, ’’Layers of a Cobalt(II) ThenoylβDiketonato Complex by Supra-molecular Recognition." Main group Chem., 11 (2012) 205.
A.J. Bard, and L.R. Faulkner, Electrochemical Methods: Fundamentals and Applications, John Wiley and Sons, New York, 2000.
R.S. Nicholson, and I. Shain, "Theory of stationary electrode polarography: single scan and cyclic methods applied to reversible, irreversible, and kinetic systems", Anal. Chem., 36 (1964) 706-123.
G. Gritzner and J. Kuta,"Recomendations on reporting electrod potentials in non-aqoueous solvents", Pure & Appi. Chain., 56:4 (1984) 461-466.
B. Nessakh, G. Horowitz, F. Garnier, F. Deloffre, P. Srivas-tava and A. Yassar, "Cyclic voltammetry and differential cyclic voltabsorptometry of soluble oligothiophenes: evidence for a four-fold charged π-dimer in duodecithiophene", J. Electroanalytical Chem., 399 (1995) 97-103.
M. Al-Anber, "Overview of cyclicvoltammetric study and conductivity of some fluorinated βdiketone containing Thenoyl unit." J. Saudi Chem. Soc., 10 (2006) 347-360.
L.Tatar Yıldırım, K. C. Emregül, R. Kurtaran,O. Atakol, Structure and Electrochemical Behaviour of Bis[N-(4-methylphenyl)salicylaldimine]copper(II), Cryst. Res. Tech-nol., 2002, 37 (2002) 1344-1351.
Z. A. Al-Anber, M. A. Al-Anber, S. Al-Tawail, "Electro-chemical Behavior of Thienyl-Fluorinated -Diketone Sub-strates and their Conductivity in Solution." Asian J. Chem., 20 (2008) 1675-1690.
R. R. Contreras, T. Suárez, M. Reyes, F. Bellandi, P. Can-cines, J. Moreno, M. Shahgholi, A. J. Di Bilio, H. B. Gray, and B. Fontal, "Electronic Structures and Reduction Poten-tials of Cu(II) Complexes of [N,N¢-Alkyl-bis(ethyl-2-amino-1- cyclopentenecarbothioate)] (Alkyl=Ethyl, Propyl, and Butyl)", Struct. & Bond., 106 (2004) 71-79.
A. Kilic, E. Tas, and I. Yilmaz, " Synthesis, spectroscopic and redox properties of the mononuclearNiII, NiII(BPh2)2 containing (B–C) bond and trinuclear CuII–NiII–CuIItype-metal complexes of N,N′-(4-amino-1-benzyl piperidine)-glyoxime", J. Chem. Sci., 121, (2009) 43–56.
G. Nemtoi, H. Chiriac, O. Dragos, M.-O. Apostu, and D. Lutic, "The Voltammetric Characterization of the Electro-deposition of Cobalt, Nickel and Iron on Gold Disk Elec-trode", Acta Chemica IASI, 17 (2009)151- 168.
M. Palacio, A. Juillard, P. Leduc, P. Battioni, D. Mansuy, "One-pot dodecanitration of Zn(II) and Ni(II)meso-tetrakis-(2,6-dichlorophenyl) porphyrin, and extreme redox properties of the obtained complexes", J Organomet. Chem., 643 (2002), 522-524.
S. Belaid, A. Landreau, O. Benali-Baitich, M.A. Khan, and G. Bouet, "Synthesis, characterisation and antifungal activity of a series of Cobalt(II) and Nickel(II) complexes with ligands derived from reduced N, N0-o-Phenylenebis(Salicylideneimine).", Trans. Met. Chem., 33 (2008) 511.
X.R. Bu, C.R. Jackson, D. Van Derveer, X.Z. You, Q.J. Meng, R.X. Wang, "New copper(II) complexes incorporating unsymmetrical tetradentate ligands with cis-N2O2 chrmophores-synthesis, molecular-structure, substitut effect and thermal-stability", Polyhedron 16:17 (1997) 2991-3001.
D. M. Boghaei and M. Lashanizadegan, "Template syntheis, characterization of high unsymmetrical tetradentate schiff base complexes of nickel(II) and copper(II)", J. Sci. I.R. Iran 11 (2000) 301-304.