Electrochemical properties of palladium(II) trans- and cis-diglycinate complexes

The kinetics of trans–cis-isomerization of palladium(II) diglycinate complexes have been studied by the spectrophotometric and potentiometric methods. The reaction of transition of trans-[Pd(Gly)2] to cis-[Pd(Gly)2] is described by a first-order equation. The half-life of the trans-isomer [Pd(Gly)2]...

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Bibliographic Details
Published in:Electrochimica acta 2011-02, Vol.56 (5), p.2110-2115
Main Authors: Kublanovsky, V.S., Nikitenko, V.N.
Format: Article
Language:English
Subjects:
Chemistry
Complex compounds
Coordination compounds
Electrolytes
Electroreduction
Electrowinning
Exact sciences and technology
Glycine
Inorganic chemistry and origins of life
Ligands
Mathematical analysis
Mechanism
Palladium
Preparations and properties
Rate constants
Reaction kinetics
Spectra
Transformations
Trans–cis-isomerization
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Summary:The kinetics of trans–cis-isomerization of palladium(II) diglycinate complexes have been studied by the spectrophotometric and potentiometric methods. The reaction of transition of trans-[Pd(Gly)2] to cis-[Pd(Gly)2] is described by a first-order equation. The half-life of the trans-isomer [Pd(Gly)2] and the rate constant of the reaction of its transition to cis-isomeric structure have been determined. A mechanism of transformation of trans-[Pd(Gly)2] into cis-[Pd(Gly)2] is proposed. The spectral characteristics and electrochemical parameters of palladium(II) trans- and cis-diglycinate complexes have been determined. The mechanism of electroreduction of palladium(II) from glycinate electrolyte containing no excess free ligand has been elucidated.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2010.11.028