Silver(I) complexes with long-chain diamines in non-aqueous solvents. Thermodynamic and modeling studies
The results of a potentiometric and calorimetric study on the complexation reactions of neutral N-donor ligands 1,4-diaminobutane (dab) and 1,5-diaminopentane (dap) with silver(I) in dimethylsulfoxide (DMSO) are reported. The investigation is extended for dab ligand to the aprotic solvent acetonitrile (AN), which presents quite different dielectric constant and donor number with respect to DMSO. In both solvents, polynuclear Ag2L 2+2 and Ag2L 2+3 species of high stability are formed, which inhibit the formation of mononuclear ones.