The thermodynamic properties of zirconium ditelluride ZrTe2 to 1500 K

Low temperature (5 to 350 K) heat capacity, fluorine combustion, and high-temperature (350 to 1500 K) drop-calorimetric measurements have been performed on a specimen of zirconium ditelluride ZrTe2. Thermodynamic quantities are reported at T = 298.15 K: the standard molar enthalpy of formation, Δsub(f)H0sub(m)(T) = -(294.1 +- 6.7) kJ.mol-1; the standard molar heat capacity, C0sub(p,m)(T) = (74.11 +- 0.37) J.K-1. mol-1; the standard molar entropy, S0sub(m)(T)=(124.24 +-0.63) J.K-1.mol-1; and the standard molar Gibbs energy of formation, Δsub(f)G0sub(m)(T) = -(290.0 +- 6.7) kJ.mol-1, all with p0 = 101325 Pa. The thermodynamic properties of ZrTe2 have been calculated to 1500 K. (author)