# UN: enthalpy of formation

> Enthalpy of formation of UN: 94 literature value(s) with sources, pages and quotes and DFT values (Materials Project / OQMD), from ORCHID.

HTML: https://data.orchid-project.org/compounds/UN.html · Markdown: https://data.orchid-project.org/compounds/UN.md

94 accepted literature formation-enthalpy value(s) (experimental 8, model 86); experimental median -146.858 kJ/mol-atom (n = 8); Materials Project -143.768 kJ/mol-atom (mp-aaaaactt); OQMD -136.591 kJ/mol-atom (oqmd-4568).

Systems: [N–U](https://data.orchid-project.org/systems/N-U.html)

## Literature values

Table: Enthalpy of formation of UN reported in the literature (94)

| Value | Phase as printed | T (K) | Class | Method | System | Source | Location | Quote |
|---:|---|---:|---|---|---|---|---|---|
| -148.433 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Oetting 1972_ [doi](https://doi.org/10.1016/0021-9614%2872%2990057-2) | Table 8, p. 6, row 6; `ORC-N4CTFGPF46` |  |
| -148.428 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Hubbard 1962_ | Table 8, p. 6, row 5; `ORC-Q57UMMJQGM` |  |
| -147.904 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 8, p. 6, row 8; `ORC-BQ4ED5A6YV` |  |
| -147.068 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Gross 1962_ | Table 8, p. 6, row 3; `ORC-7TTNMCTCQJ` |  |
| -146.649 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Gross 1962_ | Table 8, p. 6, row 4; `ORC-TMDZWZQOW5` |  |
| -145.603 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Gross 1962_ | Table 8, p. 6, row 2; `ORC-ETNK6FZWRI` |  |
| -145.368 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Johnson 1981_ [doi](https://doi.org/10.1016/0021-9614%2881%2990127-0) | Table 8, p. 6, row 7; `ORC-C5DD6ORKOW` |  |
| -143.302 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | experimental |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Neumann 1932_ [doi](https://doi.org/10.1002/zaac.19322070204) | Table 8, p. 6, row 1; `ORC-LMA2OLIQAJ` |  |
| -306.95 kJ/mol (basis unstated) | UN(fcc_B1) | 1500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 41; `ORC-5GQRLGNVCP.06407d` |  |
| -306.863 kJ/mol (basis unstated) | UN(fcc_B1) | 1600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 44; `ORC-IX5WGAJ5F4.d20b5b` |  |
| -306.677 kJ/mol (basis unstated) | UN(fcc_B1) | 1700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 47; `ORC-RTDML32YMQ.1e828e` |  |
| -306.562 kJ/mol (basis unstated) | UN(fcc_B1) | 1500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 40; `ORC-4SOGFDL7KD.99e4c0` |  |
| -306.311 kJ/mol (basis unstated) | UN(fcc_B1) | 1600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 43; `ORC-PRQWN3JCBT.6577d0` |  |
| -306.211 kJ/mol (basis unstated) | UN(fcc_B1) | 1700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 48; `ORC-LKYFGZBRXA.7c92b4` |  |
| -306.166 kJ/mol (basis unstated) | UN(fcc_B1) | 1600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 45; `ORC-ONMVX3CFAV.b7b70b` |  |
| -306.092 kJ/mol (basis unstated) | UN(fcc_B1) | 1800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 51; `ORC-UIV6IILKMF.5d7f4e` |  |
| -306 kJ/mol (basis unstated) | UN(fcc_B1) | 1900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 53; `ORC-XZOTMQ4ZD6.8a12c4` |  |
| -305.997 kJ/mol (basis unstated) | UN(fcc_B1) | 1500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 42; `ORC-BJGF5L5MTK.dc77b1` |  |
| -305.892 kJ/mol (basis unstated) | UN(fcc_B1) | 1700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 46; `ORC-EHRWJQKTP4.3fb9a5` |  |
| -305.771 kJ/mol (basis unstated) | UN(fcc_B1) | 1900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 54; `ORC-VLJIN2MRXV.0b99dd` |  |
| -305.507 kJ/mol (basis unstated) | UN(fcc_B1) | 2000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 56; `ORC-52RQVLZ5NB.81aeda` |  |
| -305.348 kJ/mol (basis unstated) | UN(fcc_B1) | 1800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 49; `ORC-4XH42DLLB2.7feeb5` |  |
| -305.208 kJ/mol (basis unstated) | UN(fcc_B1) | 2000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 57; `ORC-3HHMH36S53.a8452b` |  |
| -304.91 kJ/mol (basis unstated) | UN(fcc_B1) | 2100 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 59; `ORC-LNWODEFYWQ.868186` |  |
| -304.734 kJ/mol (basis unstated) | UN(fcc_B1) | 1800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 50; `ORC-P5AJUCQA7L.2115fa` |  |
| -304.595 kJ/mol (basis unstated) | UN(fcc_B1) | 1900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 52; `ORC-AI5HECBJVG.a35487` |  |
| -304.366 kJ/mol (basis unstated) | UN(fcc_B1) | 2100 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 60; `ORC-6BSG5BHR4O.8cbe37` |  |
| -304.211 kJ/mol (basis unstated) | UN(fcc_B1) | 2200 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 62; `ORC-GFKMCLRFEF.e8fce1` |  |
| -303.675 kJ/mol (basis unstated) | UN(fcc_B1) | 2000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 55; `ORC-3GYMTOBNQH.4c3742` |  |
| -303.405 kJ/mol (basis unstated) | UN(fcc_B1) | 2300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 65; `ORC-DRR7MSRJUQ.1579b2` |  |
| -303.205 kJ/mol (basis unstated) | UN(fcc_B1) | 2200 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 63; `ORC-ZBRMXSH2WB.22f0ac` |  |
| -302.587 kJ/mol (basis unstated) | UN(fcc_B1) | 2100 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 58; `ORC-LI2XULSDDT.698b38` |  |
| -302.491 kJ/mol (basis unstated) | UN(fcc_B1) | 2400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 68; `ORC-JFFIIXGOWD.50f914` |  |
| -301.686 kJ/mol (basis unstated) | UN(fcc_B1) | 2300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 66; `ORC-KCH4RPOTAH.fb9a78` |  |
| -301.474 kJ/mol (basis unstated) | UN(fcc_B1) | 2500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 71; `ORC-BH7JSZTY2C.86e4d3` |  |
| -301.248 kJ/mol (basis unstated) | UN(fcc_B1) | 2200 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 61; `ORC-DWRRWUWX22.ca6d10` |  |
| -300.83 kJ/mol (basis unstated) | UN(fcc_B1) | 1100 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 28; `ORC-E6766S2BVR.0ebb2b` |  |
| -300.579 kJ/mol (basis unstated) | UN(fcc_B1) | 1200 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 31; `ORC-ZMSL42X7D4.df5022` |  |
| -300.383 kJ/mol (basis unstated) | UN(fcc_B1) | 1100 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 29; `ORC-SKGLS2K2EW.8ba5bf` |  |
| -300.244 kJ/mol (basis unstated) | UN(fcc_B1) | 1300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 34; `ORC-R4N5BRFF2U.59a5fd` |  |
| -299.771 kJ/mol (basis unstated) | UN(fcc_B1) | 2400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 69; `ORC-TRIKBLFNR3.678f27` |  |
| -299.742 kJ/mol (basis unstated) | UN(fcc_B1) | 2300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 64; `ORC-B2E4WUYKGC.a700aa` |  |
| -299.742 kJ/mol (basis unstated) | UN(fcc_B1) | 1400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 37; `ORC-CGEQHS4LYV.fa541a` |  |
| -299.644 kJ/mol (basis unstated) | UN(fcc_B1) | 1200 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 32; `ORC-ELJVGLJTF5.d669b4` |  |
| -298.882 kJ/mol (basis unstated) | UN(fcc_B1) | 1100 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 30; `ORC-UOULZBT4PW.d1ef0c` |  |
| -298.809 kJ/mol (basis unstated) | UN(fcc_B1) | 1300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 35; `ORC-FKCL5UBT2Z.3afbb7` |  |
| -298.135 kJ/mol (basis unstated) | UN(fcc_B1) | 1200 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 33; `ORC-ELDFMT3MP2.7b9e5f` |  |
| -298.026 kJ/mol (basis unstated) | UN(fcc_B1) | 2400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 67; `ORC-NIZWTIHP3F.ed179c` |  |
| -297.881 kJ/mol (basis unstated) | UN(fcc_B1) | 1400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 38; `ORC-DVTJMOZ2NU.8f88da` |  |
| -297.418 kJ/mol (basis unstated) | UN(fcc_B1) | 2500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 72; `ORC-ACZCW42HVZ.15baf9` |  |
| -297.414 kJ/mol (basis unstated) | UN(fcc_B1) | 1300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 36; `ORC-LED4ZD2QMT.d4ebea` |  |
| -296.682 kJ/mol (basis unstated) | UN(fcc_B1) | 1400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 39; `ORC-WNH3R6LAVA.af0ad6` |  |
| -296.395 kJ/mol (basis unstated) | UN(fcc_B1) | 1000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 25; `ORC-WGH6GKJYHF.725fb8` |  |
| -296.06 kJ/mol (basis unstated) | UN(fcc_B1) | 2500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 70; `ORC-ZUWU5AHHLO.3c5acb` |  |
| -296.05 kJ/mol (basis unstated) | UN(fcc_B1) | 1000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 26; `ORC-DASR4TJX7D.72c456` |  |
| -295.809 kJ/mol (basis unstated) | UN(fcc_B1) | 298.15 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 2; `ORC-LG4IJGLNK3.a589e8` |  |
| -295.809 kJ/mol (basis unstated) | UN(fcc_B1) | 300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 4; `ORC-NRUUCUMUCY.5c9c5f` |  |
| -295.809 kJ/mol (basis unstated) | UN(fcc_B1) | 298.15 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 1; `ORC-OQ2NS7DMFT.75f953` |  |
| -295.798 kJ/mol (basis unstated) | UN(fcc_B1) | 300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 5; `ORC-CPM5ZX4VOK.7f8457` |  |
| -295.136 kJ/mol (basis unstated) | UN(fcc_B1) | 400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 8; `ORC-INVA6V4CB7.b1b584` |  |
| -295.056 kJ/mol (basis unstated) | UN(fcc_B1) | 400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 7; `ORC-LBK75XCB3L.90b0e0` |  |
| -294.775 kJ/mol (basis unstated) | UN(fcc_B1) | 3000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 83; `ORC-NNST36Y6NV.b9e930` |  |
| -294.705 kJ/mol (basis unstated) | UN(fcc_B1) | 1000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 27; `ORC-TM3GV6XZ4M.7ccdbf` |  |
| -294.591 kJ/mol (basis unstated) | UN(fcc_B1) | 2600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 74; `ORC-CJX32L35M4.719c92` |  |
| -294.414 kJ/mol (basis unstated) | UN(fcc_B1) | 500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 11; `ORC-3WS3XJF5TJ.b225f0` |  |
| -294.354 kJ/mol (basis unstated) | UN(fcc_B1) | 298.15 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites THERMODATA_ | Table 12, p. 10, row 2; `ORC-CG5HEFMZ7J` |  |
| -294.353 kJ/mol (basis unstated) | UN(fcc_B1) | 298.15 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 3; `ORC-EDDCF35Y2J.b5ac55` |  |
| -294.353 kJ/mol (basis unstated) | UN(fcc_B1) | 300 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 6; `ORC-KMM6PPAA3P.519a08` |  |
| -294.261 kJ/mol (basis unstated) | UN(fcc_B1) | 500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 10; `ORC-T6LGYKDNRS.43625c` |  |
| -293.842 kJ/mol (basis unstated) | UN(fcc_B1) | 2600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 73; `ORC-TK22S57VFU.16146e` |  |
| -293.773 kJ/mol (basis unstated) | UN(fcc_B1) | 600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 14; `ORC-X76PDDB6I5.b8b9b8` |  |
| -293.697 kJ/mol (basis unstated) | UN(fcc_B1) | 400 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 9; `ORC-CCGTFUNZHM.82e15a` |  |
| -293.675 kJ/mol (basis unstated) | UN(fcc_B1) | 600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 13; `ORC-VHEE3D7KG7.9b66c4` |  |
| -293.382 kJ/mol (basis unstated) | UN(fcc_B1) | 700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 16; `ORC-PFQQSPDWEK.0a87de` |  |
| -293.382 kJ/mol (basis unstated) | UN(fcc_B1) | 900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 22; `ORC-YTN5HOSUA6.f22ebb` |  |
| -293.305 kJ/mol (basis unstated) | UN(fcc_B1) | 700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 17; `ORC-RBVWYTMM3H.5a4d06` |  |
| -293.298 kJ/mol (basis unstated) | UN(fcc_B1) | 800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 19; `ORC-SJPFWQEQHD.5399ed` |  |
| -293.18 kJ/mol (basis unstated) | UN(fcc_B1) | 900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 23; `ORC-6MGJCMGLS5.895598` |  |
| -293.089 kJ/mol (basis unstated) | UN(fcc_B1) | 800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 20; `ORC-7Q3LCXL36F.0f7f9d` |  |
| -293.061 kJ/mol (basis unstated) | UN(fcc_B1) | 500 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 12; `ORC-OSRKYME3YH.4537de` |  |
| -292.566 kJ/mol (basis unstated) | UN(fcc_B1) | 600 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 15; `ORC-XKPHE7ZU3B.0aaf7c` |  |
| -292.247 kJ/mol (basis unstated) | UN(fcc_B1) | 700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 18; `ORC-XKCDW6OSC7.9db473` |  |
| -292.108 kJ/mol (basis unstated) | UN(fcc_B1) | 900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 24; `ORC-64HK7HDO2G.821af5` |  |
| -292.101 kJ/mol (basis unstated) | UN(fcc_B1) | 800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 21; `ORC-F6S7TIFTXF.05d2d2` |  |
| -291.374 kJ/mol (basis unstated) | UN(fcc_B1) | 2700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 75; `ORC-K2SQUDE2ZK.c4571d` |  |
| -291.249 kJ/mol (basis unstated) | UN(fcc_B1) | 2700 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 76; `ORC-W7NUD2BQTV.55f4fa` |  |
| -288.696 kJ/mol (basis unstated) | UN(fcc_B1) | 2800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 77; `ORC-SQOVCAED3M.04ded1` |  |
| -287.353 kJ/mol (basis unstated) | UN(fcc_B1) | 2800 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 78; `ORC-7XCT3FJ6M2.caed5f` |  |
| -286.669 kJ/mol (basis unstated) | UN(fcc_B1) | 2900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Matsui 1987_ | Table 7, p. 5, row 80; `ORC-P7CBF573OS` |  |
| -285.725 kJ/mol (basis unstated) | UN(fcc_B1) | 2900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 79; `ORC-X5LVFVF5YO.b59df3` |  |
| -282.864 kJ/mol (basis unstated) | UN(fcc_B1) | 2900 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 81; `ORC-PY7QTTSI37.6026ae` |  |
| -282.462 kJ/mol (basis unstated) | UN(fcc_B1) | 3000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000; _cites Tagawa 1974_ | Table 7, p. 5, row 82; `ORC-U4TG6YQWFX.db7422` |  |
| -277.743 kJ/mol (basis unstated) | UN(fcc_B1) | 3000 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 7, p. 5, row 84; `ORC-GZLMPS3ZHX.ecfaac` |  |
| -147.176 kJ/mol-atom | N0.500U0.500(fcc_B1) | 298.15 | model |  | [N–U](https://data.orchid-project.org/systems/N-U.html) | [1] Chevalier 2000 | Table 8, p. 6, row 9; `ORC-ZMJXKFWIKB` |  |

### Uncertainty budget

Components kept separate, in the value's unit (literature [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md), [UNCERTAINTY_CALIBRATION.md](https://data.orchid-project.org/literature/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.

Table: Uncertainty budget of the literature values of UN

| Value | Unit | Printed | Reading | Method (class, basis) | Composition | Scatter | Conversion | Effective |
|---:|---|---:|---:|---|---:|---:|---:|---:|
| -148.433 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -148.428 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -147.904 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -147.068 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -146.649 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -145.603 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -145.368 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -143.302 | kJ/mol-atom |  | 5.000e-5 | 3.5 (unknown, calibrated) |  |  |  | 3.5 |
| -306.95 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.863 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.677 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.562 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.311 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.211 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.166 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306.092 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -306 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -305.997 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -305.892 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -305.771 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -305.507 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -305.348 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -305.208 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -304.91 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -304.734 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -304.595 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -304.366 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -304.211 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -303.675 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -303.405 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -303.205 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -302.587 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -302.491 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -301.686 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -301.474 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -301.248 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -300.83 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -300.579 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -300.383 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -300.244 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -299.771 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -299.742 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -299.742 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -299.644 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -298.882 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -298.809 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -298.135 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -298.026 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -297.881 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -297.418 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -297.414 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -296.682 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -296.395 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -296.06 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -296.05 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -295.809 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -295.809 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -295.809 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -295.798 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -295.136 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -295.056 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.775 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.705 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.591 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.414 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.354 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.353 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.353 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -294.261 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.842 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.773 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.697 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.675 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.382 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.382 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.305 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.298 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.18 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.089 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -293.061 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -292.566 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -292.247 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -292.108 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -292.101 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -291.374 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -291.249 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -288.696 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -287.353 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -286.669 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -285.725 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -282.864 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -282.462 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -277.743 | kJ/mol (basis unstated) |  | 5.000e-4 | 7.8 (model_calculated, calibrated) |  |  |  | 7.8 |
| -147.176 | kJ/mol-atom |  | 5.000e-5 | 3.9 (model_calculated, calibrated) |  |  |  | 3.9 |

## DFT formation energies

Lowest-energy entries at this composition. Materials Project and OQMD use different energy references and are never averaged. 1 eV/atom = 96.485 kJ/mol-atom.

Table: DFT formation energy of UN

| Source | Entry | kJ/mol-atom | eV/atom | Space group | E above hull (kJ/mol-atom) | E above hull (eV/atom) | Theoretical |
|---|---|---:|---:|---|---:|---:|---|
| Materials Project | mp-aaaaactt | -143.768 | -1.49006 | Fm-3m | 0 | 0 | no |
| OQMD | oqmd-4568 | -136.591 | -1.41567 | Fm-3m | 0 | 0 | no |

DFT sources: A. Jain et al., Commentary: The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002. [doi:10.1063/1.4812323](https://doi.org/10.1063/1.4812323) (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501-1509; S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010. [doi:10.1007/s11837-013-0755-4](https://doi.org/10.1007/s11837-013-0755-4) (CC BY 4.0); 

## Sources

1. P.-Y. Chevalier, E. Fischer, B. Cheynet, Thermodynamic modelling of the N–U system, Journal of Nuclear Materials 280, 136-150 (2000). [doi:10.1016/s0022-3115(00)00043-x](https://doi.org/10.1016/s0022-3115%2800%2900043-x)

## 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). https://doi.org/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). https://doi.org/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). https://doi.org/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.

```bibtex
@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}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).