Enthalpies of formation of some 3d Transition Metal-Antimony compounds by high temperature direct synthesis calorimetry

Abstract

In this work we have performed a calorimetric investigation of some thermoelectric compounds, which are useful for energy savings, but do not contain toxic or extremely rare elements.The standard enthalpies of formation at 298 K of some binary antimony and transition metal (TM) compounds have been measured by high temperature direct synthesis calorimetry. The reported results are: ScSb(−112.0 ± 3.1); Sc5Sb3(-95.4 ± 2.8) TiSb (−63.3 ± 2.4); CrSb (−3.0 ± 2.7); FeSb2(0 ± 2.5); Mn2Sb (−9.2 ± 1.5); CoSb (−19.6 ± 1.3); CoSb3(-20.1 ± 2.0); NiSb (−35.3 ± 1.8). In kJ/mole of atoms.We compare our experimental measurement results with some previously published measurements and with predicted values by ab initio calculations.