Abstract
Abstract Solution enthalpies of LiClO 4 in 1,2-dimethoxyethane + γ-butyrolactone (1,2-DME + γBL) mixtures and of LiClO 4 , NaI and N,N-dimethylacetamide in 1,2-DME + propylene carbonate (PC) mixtures have been measured. The molar enthalpies of solution, Δ sol H m of the examined electrolytes as a function of the mixed solvent composition exhibit a distinct minimum within the range of high 1,2-DME content, similar to those observed earlier for LiBF 4 and LiPF 6 solutions in 1,2-DME + γ-BL mixtures while the dissolution enthalpy of DMA runs monotonously within the same range of the mixed solvent compositions. The presence of the Δ sol H m minimum of the salts is explained as a resultant of energetic effects of interactions in the solution, connected with the ionic association of the salt, the 1,2-DME + cation complex formation and changes in a composition of the ionic solvation shells
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