Association of Cu(NO3)2 with Kryptofix-221 in Mixed (MeOH-DMF) Solvents at Different Temperatures

Abtract New equation was applied for the Calculation of association constant (KA) from the reaction of Cu(NO3)2 with Kryptofix-221 in mixed (MeOH-DMF) and in absence and Presence of ligand at different temperatures. From the experimental results, the molar conductance (Λ) were evaluated. The limiting molar conductance (Λο) were also estimated. Gibbs free energies of association (ΔGA) was also estimated, Moreover, recalculation of (KA) was achieved by applying Shedlovsky and Fouss-Kraus extrapolation methods. In addition, the molar solvated (V), Van der Waals (VW), electrostriction (Ve) and apparent molar ( v) volmes were calculated. Also, the enthalpy change (ΔH) and the entropy change (TΔS) for Cu(NO3)2 were calculated. The degree of dissociation (α) were also calculated. All the results were discussed in view of ion-solvent interactions.