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. (C) 2010 Elsevier Ltd. All rights reserved.