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- E-ISSN 2288-8985
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Electrochemical Properties of Nickel(II) Complexes with Multidentate N, O-Schiff Base Ligands
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1997, v.10 no.4, pp.246-255
Kim,
S., Kim,
J., &
Roh,
S.
(1997). Electrochemical Properties of Nickel(II) Complexes with Multidentate N, O-Schiff Base Ligands. Analytical Science and Technology, 10(4), 246-255.
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Abstract
A series of Ni(II) complexes with multidentate N, O-Schiff base ligands: ie [bis-(salicylaldehyde) ethylenediamine(SED), bis-(salicylaldehyde) propylenediamine(SPD), bis-(salicylaldehyde) dietrylenetriamine(SDT), and bis-(salicylaldehyde) triethylenetetraamine(STT)] and Ni(II) complexes were synthesized. The Ni(II) complexes were characterized by elemental analysis, IR, UV-Vis and mass spectrometry. The stability constants of each nickel (II) complexes were determined by potentiometry in 70% dioxane-30% <TEX>$H_2O$</TEX> and ethanol. The stability constants of Nickel(II) complexs increased in the order of Ni(II)-SPD<Ni(II)-SED<Ni(II)-SDT<Ni(II)-STT and with increasing the number of donor atoms employed. Reduction potentials obtained from cyclovoltalogram increased in the order of Ni(II)-SPD<Ni(II)-SED<Ni(II)-SDT<Ni(II)-STT. Oxidation-reduction of the Ni(II) complexes was dominated by one-electron reaction.
- keywords
- schiff base, stability constants, reduction potentials
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