Diamant V. Physicochemical properties of non-aqueous solutions of bis(oxalate)borates and bis(salicylato)borates of alkali metals and ammonium

The influence on the structure and transport properties of electrolytes based on bis(oxalate) borates and bis(salicylo) borates of alkali metals and ammonium ion of the synthesis conditions, solvent composition and temperature was determined. The methods of their synthesis, purification, the physicochemical properties, the electrochemical characteristics and the features of ion transport in the electrolytic systems of bis(chelate) borate of alkali metal and tetramethylammonium - solvent are investigated. According to the results of studies of electrolyte components, the influence of several factors on the physicochemical and electrochemical properties of electrolyte systems based on them has been established. NMR and IR studies have shown the tendency of bis(salicylo)borate anion to form the coordination bond of a boron atom with a (NH2) (NH) -group of solvent, which promotes the appearance of solvate complexes of salt and solvent and makes the basis for changing the physicochemical and electrochemical properties of the electrolyte. Anion structure has been found to affect the solubility, thermal stability and electrolytic dissociation of these salts in aprotic dipolar solvents. The bis(salicylo)borate ion with low symmetry interacts better with ADR than bis(oxalato)borate ion with the high symmetry. The influence of solvent on the formation of transport properties of electrolytes based on bis(salicylo)borates of monovalent cations (K+, Na+, Li+ Me4N+) was detected due to the comparison of dynamic viscosity and conductivity in Me4NBSB systems - 0.5 M DMAA and Me4NBSB - 0.5 M DMFA.