The thermodynamic properties of cesium uranoniobate

The enthalpy of formation of crystalline cesium uranoniobate at 298.15 K wa s determined. The temperature dependence of the heat capacity of the substa nce was studied from 5 to 300 K. The entropy and the Gibbs function of form ation of cesium uranoniobate at 298.15 K were calculated. The enthalpies, e ntropies, Gibbs energies, and equilibrium constants were determined for two synthetic routes to cesium uranoniobate at several temperatures.