Kinetics and Mechanism of the Ligand Substitution Reaction of the Di-μ-hydroxobis(bipyridyl)dipalladium(II) Ion with some Bio-relevant Ligands

Kinetics and Mechanism of the Ligand Substitution Reaction of the Di-μ-hydroxobis(bipyridyl)dipalladium(II) Ion with some Bio-relevant Ligands

The interaction of di- μ -hydroxobis(bipyridyl)dipalladium(II) with the selected bio-relevant ligands: thioglycolic acid (HL 1 ), glutathione(HL 2 ) and DL-penicillamine(HL 3 ) has been studied spectrophotometrically in aqueous medium as a function of complex and ligand concentrations, pH, and tempe...

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Veröffentlicht in:Journal of solution chemistry 2011-03, Vol.40 (3), p.532-544
Hauptverfasser: Mallick, Subhasis, Bera, Biplab K., Karmakar, Parnajyoti, Mondal, Subala, Mandal, Arup, Ghosh, Alak K.
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Exact sciences and technology
General and physical chemistry
Geochemistry
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Oceanography
Physical Chemistry
Solutions
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Zusammenfassung:The interaction of di- μ -hydroxobis(bipyridyl)dipalladium(II) with the selected bio-relevant ligands: thioglycolic acid (HL 1 ), glutathione(HL 2 ) and DL-penicillamine(HL 3 ) has been studied spectrophotometrically in aqueous medium as a function of complex and ligand concentrations, pH, and temperature at constant ionic strength. Two consecutive reaction steps are observed: the first step is dependent on the incoming ligand concentration and the second step which is independent, is assigned to ring closure. The activation parameters, conductivity data and IR data obtained also support the proposed mechanism.
ISSN:0095-9782
1572-8927
DOI:10.1007/s10953-011-9659-5