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| Ali, M. A. |
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| Azevedo, Nuno Monteiro |
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Piotrowska-Kirschling, Agnieszka
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article
Kinetics and thermodynamic of reaction of oxydiacetate copper(II) complex with 2,2′-bipyridine and 1,10-phenanthroline in anionic and cationic surfactant solutions
Abstract
The oxydiacetate complexes of copper(II) with 2,2′-bipyridine (bipy) and 1,10-phenanthroline (phen) have beeninvestigated towards their kinetic and thermodynamic stability. The kinetics of the substitution reactions of theoxydiacetate complex of Cu2+ with bipy and phen have been studied in two types of surfactant solutions - anionicdodecyl sulfate sodium (SDS) and cationic hexadecyl trimethyl-ammonium bromide (CTAB). The valuesof the observable rate constants for the studied reactions have been determined using the “Glint” program.Moreover,the thermodynamic stability of the copper(II) complexes with oda, phen and bipy in aqueous solutions hasbeen investigated using potentiometric titration method (PT). The concentration distributions of the studiedcomplexes as a function of pH calculated based on the values of log βpqrs have been determined. Additionally,the antioxidant activities of the oxydiacetate complexes of copper(II) with bipy and phen have been studiedby the nitro blue tetrazolium (NBT) test and the cyclic voltammetry (CV) technique.