Na9Sn4: enthalpy of formation

2 accepted literature formation-enthalpy value(s) (DFT 2).

Systems: Na–Sn

Literature values

Enthalpy of formation of Na9Sn4 reported in the literature (2)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-2.51 eVNa9Sn40DFTDFTNa–Sn[1] Dreval 2017Table 3, p. 7, row 23
report
-1.774 eVNa9Sn40DFTDFTNa–Sn[1] Dreval 2017Table 3, p. 7, row 24
report

Uncertainty budget

Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.

Uncertainty budget of the literature values of Na9Sn4
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-2.51eV0.0050.8701 (dft, calibrated)0.8701
-1.774eV5.000e-40.8701 (dft, calibrated)0.8701

Sources

  1. Liya Dreval, Matthias Zschornak, Wolfram Münchgesang, Olga Fabrichnaya, David Rafaja, Miléna L. Martine et al., Thermodynamic assessment and first principle calculations of the Na Sb Sn system, Journal of Alloys and Compounds 695, 1725-1742 (2017). doi:10.1016/j.jallcom.2016.11.003