Bi2Mg3: enthalpy of formation

12 accepted literature formation-enthalpy value(s) (experimental 5, model 4, DFT 3).

Literature values

Enthalpy of formation of Bi2Mg3 reported in the literature (12)
Value	Phase as printed	T (K)	Class	Method	System	Source	Location
-37.181 kJ/mol (basis unstated)	Bi2Mg3	298.15	experimental	EMF	Bi–Mg	[1] Acta Metall 2012 cites Moser 1974	Table 3, p. 9, row 4 report
-31.403 kJ/mol (basis unstated)	Bi2Mg3	298.15	experimental	Calorimetry	Bi–Mg	[1] Acta Metall 2012 cites Kubaschewski 1939	Table 3, p. 9, row 2 report
-31.403 kJ/mol (basis unstated)	Bi2Mg3	298.15	experimental	Evaluated	Bi–Mg	[1] Acta Metall 2012 cites Kubaschewski 1956	Table 3, p. 9, row 3 report
-30.146 kJ/mol (basis unstated)	Bi2Mg3	298.15	experimental	Calorimetry	Bi–Mg	[1] Acta Metall 2012 cites Seith 1937	Table 3, p. 9, row 1 report
-25.377 kJ/mol (basis unstated)	Bi2Mg3	298.15	experimental	Evaluated	Bi–Mg	[1] Acta Metall 2012 cites Kubaschewski 1979	Table 3, p. 9, row 5 report
-34.08 kJ/mol (basis unstated)	Bi2Mg3	298.15	model	Optimized	Bi–Mg	[1] Acta Metall 2012 cites Paliwal 2009	Table 3, p. 9, row 11 report
-33.884 kJ/mol (basis unstated)	Bi2Mg3	298.15	model	Optimized	Bi–Mg	[1] Acta Metall 2012	Table 3, p. 9, row 12 report
-33.255 kJ/mol (basis unstated)	Bi2Mg3	298.15	model	Optimized	Bi–Mg	[1] Acta Metall 2012 cites Oh 1992	Table 3, p. 9, row 7 report
-25.355 kJ/mol (basis unstated)	Bi2Mg3	298.15	model	Calculated	Bi–Mg	[1] Acta Metall 2012 cites Alcock 1983	Table 3, p. 9, row 6 report
-71.276 kJ/mol (basis unstated)	Bi2Mg3	298.15	DFT	First-principles calculated	Bi–Mg	[1] Acta Metall 2012 cites Zhou 2010	Table 3, p. 9, row 10 report
-31.454 kJ/mol (basis unstated)	Bi2Mg3	298.15	DFT	First-principles calculated	Bi–Mg	[1] Acta Metall 2012 cites Zhou 2008	Table 3, p. 9, row 9 report
-24.369 kJ/mol (basis unstated)	Bi2Mg3	298.15	DFT	First-principles calculated	Bi–Mg	[1] Acta Metall 2012 cites Curtarolo 2005	Table 3, p. 9, row 8 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 Bi2Mg3
Value	Unit	Reading	Method (class, basis)	Effective
-37.181	kJ/mol (basis unstated)	5.000e-4	23 (emf, cleaned_below_threshold)	23
-31.403	kJ/mol (basis unstated)	5.000e-4	16 (solution_reaction_calorimetry, calibrated)	16
-31.403	kJ/mol (basis unstated)	5.000e-4	17.5 (evaluated_compilation, calibrated)	17.5
-30.146	kJ/mol (basis unstated)	5.000e-4	16 (solution_reaction_calorimetry, calibrated)	16
-25.377	kJ/mol (basis unstated)	5.000e-4	17.5 (evaluated_compilation, calibrated)	17.5
-34.08	kJ/mol (basis unstated)	5.000e-4	19.5 (model_calculated, calibrated)	19.5
-33.884	kJ/mol (basis unstated)	5.000e-4	19.5 (model_calculated, calibrated)	19.5
-33.255	kJ/mol (basis unstated)	5.000e-4	19.5 (model_calculated, calibrated)	19.5
-25.355	kJ/mol (basis unstated)	5.000e-4	19.5 (model_calculated, calibrated)	19.5
-71.276	kJ/mol (basis unstated)	5.000e-4	41.97 (dft, calibrated)	41.97
-31.454	kJ/mol (basis unstated)	5.000e-4	41.97 (dft, calibrated)	41.97
-24.369	kJ/mol (basis unstated)	5.000e-4	41.97 (dft, calibrated)	41.97

Sources

Acta Metall. Sin. Engl. Lett., 25, 19-28(2012). doi:10.11890/1006-7191-121-19

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Parity: DFT-vs-experiment formation-enthalpy benchmark (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735943
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); G. Kim, S. V. Meschel, P. Nash, W. Chen, Experimental formation enthalpies for intermetallic phases and other inorganic compounds, Scientific Data 4 (2017) 170162, https://doi.org/10.1038/sdata.2017.162; B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file. Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_dft_benchmark_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Parity: DFT-vs-experiment formation-enthalpy benchmark}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735943},
  url       = {https://doi.org/10.5281/zenodo.23735943},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}