Journal of Chemical Thermodynamics, Vol.51, 65-69, 2012
Standard enthalpies of formation of Ce-Au congruent compounds (CeAu, CeAu2, and Ce14Au51)
The enthalpies of formation of Ce-Au congruent compounds (CeAu, CeAu2, and Ce14Au51) have been determined at 1123 K and the standard enthalpies of formation at 298 K have been deduced from the measurements of enthalpy increments of single-phase samples. The following values (kJ/mole of atoms) are reported: Delta H-f degrees K-1123 (CeAu) = -75.2 +/- 1.4, Delta H-f degrees(298K) (CeAu) = -76.2 +/- 1.9, Delta H-f degrees(1123K) (CeAu2) = -71.3 +/- 2.0, Delta H-f degrees(298K) (CeAu2) = -70.3 +/- 2.2, Delta H-f degrees(1123K) (Ce14Au51) = -55.0 +/- 1.7, and Delta H-f degrees(298K) (Ce14Au51) = -53.2 +/- 1.9. (C) 2012 Elsevier Ltd. All rights reserved.