Thermodynamics of complex formation of Ag1

Clara Haber, nee Immerwahr (1870–1915): Life, Work and Legacy

“…100 % of the adsorbed Ag + was desorbed from the P(N‐ATU‐ co ‐EBA) membrane adsorber using this solution. These experiments indicate the stability of the Ag‐thiourea complex 25. The total desorption of the adsorbed Ag + was only possible with the same complexation agent that is used to build the membrane adsorber.…”

“…Thiocarbonyl compounds are soft ligands which coordinate metal ions via sulfur atom(s) 24. They show relevant chemical affinities towards Ag(I) with high thermodynamic stability 25. Even if the particle content is much higher, the P(PS‐Sulf‐ co ‐DVB) membrane adsorbed only 480 mg m −2 (4.5 mg cm −3 ) Ag.…”

Thermodynamic relationships in complex formation. IX. ΔH – ΔS and free energy relationships in mixed ligand complex formation reactions of Cd(II) in aqueous solution

“…The phenomenon occurs in the series analyzed in the present work, in the series of complexing reaction of Ag(I), (14)(15)(16) of Hg(II) (13) and in several series of complexing reactions with rare earth metal ions. (10,11) It can be concluded that, in the successive stepwise complex formation, the system gains and loses stiffness in an alternating way corresponding to the alternating release of the solvent molecules from the coordination spheres of the reactants.…”

“….). Because closely spread equilibrium isotherms are experimentally observed both for different series of reactions in the same solvent (8,(10)(11)(12)(13) or for the same series of reactions in different but similar solvents (water, methanol, ethanol) (14)(15)(16) it can be concluded that in the cases investigated the values of τ are mainly determined by the nature and the role of the solvent medium. (iv) The solvent molecules involved in the complex formation reactions appear to be the main factor that determines the relative position of the reactions in the respective trend.…”