The AcidBase Concept as Applied to the Li₂OR_xO_y Melts
(R = B, Ge, or Si)

V. G. Konakov and M. M. Pivovarov

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
ul. Odoevskogo 24/2, St. Petersburg, 199155 Russia

Abstract—The experimental data on the enthalpies of the mixing of oxides and oxygen ion exponents for lith-
ium borates, silicates, and germanates are compared with the electronegativities of the oxide-forming elements.
It is shown that the enthalpies of the mixing of oxides correlate well with the oxygen ion exponents and the
constants of dissociation (accompanied by the detachment of an oxygen ion) of the probable structural–chem-
ical groupings responsible for the melt structure. The prospects for applying the electronegativity concept to the
prediction of physicochemical properties of complex oxides and oxide materials are discussed.

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