Abstract
Pd(dmen)Cl-2 complex was synthesized and characterized, where dmen = N,N-dimethylethylenediamine. Stoichiometry and stability constants of the complexes formed between [Pd(dmen)(H2O)(2)](2+) and various biologically relevant ligands such as amino acids, peptides and dicarboxylic acids are investigated at 25 degrees C and at constant 0.1 M ionic strength. The concentration distribution diagrams of the various species formed are evaluated. The equilibrium constants for the displacement of coordinated ligands as inosine, glycine or methionine by cysteine are calculated. The results are expected to contribute to the chemistry of tumour therapy. (C) 2012 Elsevier B.V. All rights reserved.