Aluminum, gallium, and indium oxopivalates: Thermodynamic characteristics of gallium oxopivalates

Aluminum, gallium, and indium oxopivalates were synthesized by a heterophase method, and their evaporation was studied by the Knudsen effusion method with the mass-spectral analysis of the gas phase. It was shown that oxopivalates can be considered within binary systems as compounds of the type mM(piv)3 · nM2O3. The standard enthalpies of formation of gallium oxopivalates Ga3O(piv)7(gas), 7Ga(piv)3 · Ga2O3(solid), 4Ga(piv)3 · Ga2O3(solid), and 7Ga(piv)3 · 2Ga2O3(solid) were found.