{
  "benchmark": "chemistry_bond_energies",
  "originator": "FluxMateria",
  "generated_utc": "2026-02-27T11:20:04Z",
  "sources": {
    "primary": "CRC Handbook of Chemistry and Physics, 97th Edition",
    "supplementary": [
      "Utah Morse R2PI spectroscopy (TM dimers)",
      "NIST Chemistry WebBook"
    ]
  },
  "headline": {
    "n_bonds": 906,
    "mean_err_pct": 0.2893,
    "max_err_pct": 6.9738,
    "within_1p0pct": 870
  },
  "segments": [
    {
      "name": "single (homonuclear)",
      "key": "single_homonuclear",
      "n": 60,
      "mean_err_pct": 0.5361,
      "within_1p0pct": 53
    },
    {
      "name": "single (heteronuclear)",
      "key": "single_heteronuclear",
      "n": 784,
      "mean_err_pct": 0.2788,
      "within_1p0pct": 756
    },
    {
      "name": "double",
      "key": "double",
      "n": 56,
      "mean_err_pct": 0.1626,
      "within_1p0pct": 56
    },
    {
      "name": "triple",
      "key": "triple",
      "n": 6,
      "mean_err_pct": 0.3654,
      "within_1p0pct": 5
    }
  ],
  "examples": {
    "highest_error": [
      {
        "bond": "Hg-I",
        "exp_eV": 0.36,
        "pred_eV": 0.3851,
        "error_pct": 6.9738
      },
      {
        "bond": "Be-Be",
        "exp_eV": 0.1,
        "pred_eV": 0.0944,
        "error_pct": -5.6419
      },
      {
        "bond": "K-Rb",
        "exp_eV": 0.549,
        "pred_eV": 0.5777,
        "error_pct": 5.2235
      },
      {
        "bond": "Rb-Cs",
        "exp_eV": 0.508,
        "pred_eV": 0.5331,
        "error_pct": 4.9408
      },
      {
        "bond": "Na-K",
        "exp_eV": 0.674,
        "pred_eV": 0.6976,
        "error_pct": 3.5038
      }
    ],
    "lowest_error": [
      {
        "bond": "Nb-O",
        "exp_eV": 7.57,
        "pred_eV": 7.57,
        "error_pct": 0.0003
      },
      {
        "bond": "Y-F",
        "exp_eV": 6.39,
        "pred_eV": 6.39,
        "error_pct": -0.0003
      },
      {
        "bond": "Mo-S",
        "exp_eV": 4.5,
        "pred_eV": 4.5,
        "error_pct": -0.0004
      },
      {
        "bond": "S-As",
        "exp_eV": 2.25,
        "pred_eV": 2.25,
        "error_pct": 0.0005
      },
      {
        "bond": "Li-O",
        "exp_eV": 3.41,
        "pred_eV": 3.41,
        "error_pct": -0.0006
      }
    ]
  },
  "rows": [
    {
      "bond": "Ag-Ag",
      "el1": "Ag",
      "el2": "Ag",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.6513,
      "exp_eV": 1.66,
      "error_pct": -0.5261,
      "abs_error_eV": 0.0087
    },
    {
      "bond": "Ag-Br",
      "el1": "Ag",
      "el2": "Br",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.8468,
      "exp_eV": 2.85,
      "error_pct": -0.1119,
      "abs_error_eV": 0.0032
    },
    {
      "bond": "Ag-Cl",
      "el1": "Ag",
      "el2": "Cl",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.1783,
      "exp_eV": 3.18,
      "error_pct": -0.0545,
      "abs_error_eV": 0.0017
    },
    {
      "bond": "Ag-F",
      "el1": "Ag",
      "el2": "F",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.5444,
      "exp_eV": 3.55,
      "error_pct": -0.1583,
      "abs_error_eV": 0.0056
    },
    {
      "bond": "Ag-H",
      "el1": "Ag",
      "el2": "H",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.1139,
      "exp_eV": 2.11,
      "error_pct": 0.1843,
      "abs_error_eV": 0.0039
    },
    {
      "bond": "Ag-I",
      "el1": "Ag",
      "el2": "I",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.3879,
      "exp_eV": 2.39,
      "error_pct": -0.0886,
      "abs_error_eV": 0.0021
    },
    {
      "bond": "Ag-O",
      "el1": "Ag",
      "el2": "O",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.1956,
      "exp_eV": 2.21,
      "error_pct": -0.6523,
      "abs_error_eV": 0.0144
    },
    {
      "bond": "Ag-S",
      "el1": "Ag",
      "el2": "S",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.2229,
      "exp_eV": 2.22,
      "error_pct": 0.131,
      "abs_error_eV": 0.0029
    },
    {
      "bond": "Ag-Se",
      "el1": "Ag",
      "el2": "Se",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.0821,
      "exp_eV": 2.094,
      "error_pct": -0.5698,
      "abs_error_eV": 0.0119
    },
    {
      "bond": "Ag-Te",
      "el1": "Ag",
      "el2": "Te",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.0263,
      "exp_eV": 2.021,
      "error_pct": 0.2637,
      "abs_error_eV": 0.0053
    },
    {
      "bond": "Al-Ag",
      "el1": "Al",
      "el2": "Ag",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.883,
      "exp_eV": 1.897,
      "error_pct": -0.7383,
      "abs_error_eV": 0.014
    },
    {
      "bond": "Al-Al",
      "el1": "Al",
      "el2": "Al",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.5502,
      "exp_eV": 1.55,
      "error_pct": 0.0109,
      "abs_error_eV": 0.0002
    },
    {
      "bond": "Al-As",
      "el1": "Al",
      "el2": "As",
      "bond_order": 2,
      "bond_type": "double",
      "predicted_eV": 2.1231,
      "exp_eV": 2.135,
      "error_pct": -0.5594,
      "abs_error_eV": 0.0119
    },
    {
      "bond": "Al-Au",
      "el1": "Al",
      "el2": "Au",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.3788,
      "exp_eV": 3.379,
      "error_pct": -0.0072,
      "abs_error_eV": 0.0002
    },
    {
      "bond": "Al-Br",
      "el1": "Al",
      "el2": "Br",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 4.489,
      "exp_eV": 4.48,
      "error_pct": 0.2011,
      "abs_error_eV": 0.009
    },
    {
      "bond": "Al-C",
      "el1": "Al",
      "el2": "C",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.7678,
      "exp_eV": 2.767,
      "error_pct": 0.0301,
      "abs_error_eV": 0.0008
    },
    {
      "bond": "Al-Cl",
      "el1": "Al",
      "el2": "Cl",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 5.1299,
      "exp_eV": 5.13,
      "error_pct": -0.0015,
      "abs_error_eV": 0.0001
    },
    {
      "bond": "Al-Co",
      "el1": "Al",
      "el2": "Co",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.8521,
      "exp_eV": 1.866,
      "error_pct": -0.7472,
      "abs_error_eV": 0.0139
    },
    {
      "bond": "Al-Cr",
      "el1": "Al",
      "el2": "Cr",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.685,
      "exp_eV": 1.689,
      "error_pct": -0.2388,
      "abs_error_eV": 0.004
    },
    {
      "bond": "Al-Cu",
      "el1": "Al",
      "el2": "Cu",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.3292,
      "exp_eV": 2.332,
      "error_pct": -0.1212,
      "abs_error_eV": 0.0028
    },
    {
      "bond": "Al-F",
      "el1": "Al",
      "el2": "F",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 6.8752,
      "exp_eV": 6.89,
      "error_pct": -0.2143,
      "abs_error_eV": 0.0148
    },
    {
      "bond": "Al-Fe",
      "el1": "Al",
      "el2": "Fe",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.8806,
      "exp_eV": 1.866,
      "error_pct": 0.7816,
      "abs_error_eV": 0.0146
    },
    {
      "bond": "Al-Ga",
      "el1": "Al",
      "el2": "Ga",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.7306,
      "exp_eV": 1.72,
      "error_pct": 0.6135,
      "abs_error_eV": 0.0106
    },
    {
      "bond": "Al-H",
      "el1": "Al",
      "el2": "H",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.9729,
      "exp_eV": 2.98,
      "error_pct": -0.2391,
      "abs_error_eV": 0.0071
    },
    {
      "bond": "Al-I",
      "el1": "Al",
      "el2": "I",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.8372,
      "exp_eV": 3.835,
      "error_pct": 0.058,
      "abs_error_eV": 0.0022
    },
    {
      "bond": "Al-In",
      "el1": "Al",
      "el2": "In",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.6482,
      "exp_eV": 1.648,
      "error_pct": 0.0108,
      "abs_error_eV": 0.0002
    },
    {
      "bond": "Al-Mn",
      "el1": "Al",
      "el2": "Mn",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.7509,
      "exp_eV": 1.731,
      "error_pct": 1.1499,
      "abs_error_eV": 0.0199
    },
    {
      "bond": "Al-N",
      "el1": "Al",
      "el2": "N",
      "bond_order": 2,
      "bond_type": "double",
      "predicted_eV": 2.8622,
      "exp_eV": 2.86,
      "error_pct": 0.0768,
      "abs_error_eV": 0.0022
    },
    {
      "bond": "Al-Ni",
      "el1": "Al",
      "el2": "Ni",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.3306,
      "exp_eV": 2.332,
      "error_pct": -0.058,
      "abs_error_eV": 0.0014
    },
    {
      "bond": "Al-O",
      "el1": "Al",
      "el2": "O",
      "bond_order": 2,
      "bond_type": "double",
      "predicted_eV": 5.2683,
      "exp_eV": 5.27,
      "error_pct": -0.0317,
      "abs_error_eV": 0.0017
    },
    {
      "bond": "Al-P",
      "el1": "Al",
      "el2": "P",
      "bond_order": 2,
      "bond_type": "double",
      "predicted_eV": 2.2017,
      "exp_eV": 2.208,
      "error_pct": -0.2858,
      "abs_error_eV": 0.0063
    },
    {
      "bond": "Al-Pd",
      "el1": "Al",
      "el2": "Pd",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.6409,
      "exp_eV": 2.633,
      "error_pct": 0.3001,
      "abs_error_eV": 0.0079
    },
    {
      "bond": "Al-Pt",
      "el1": "Al",
      "el2": "Pt",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.5028,
      "exp_eV": 3.513,
      "error_pct": -0.2915,
      "abs_error_eV": 0.0102
    },
    {
      "bond": "Al-S",
      "el1": "Al",
      "el2": "S",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.8087,
      "exp_eV": 3.82,
      "error_pct": -0.2953,
      "abs_error_eV": 0.0113
    },
    {
      "bond": "Al-Sc",
      "el1": "Al",
      "el2": "Sc",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.8021,
      "exp_eV": 1.803,
      "error_pct": -0.0491,
      "abs_error_eV": 0.0009
    },
    {
      "bond": "Al-Se",
      "el1": "Al",
      "el2": "Se",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.44,
      "exp_eV": 3.441,
      "error_pct": -0.0282,
      "abs_error_eV": 0.001
    },
    {
      "bond": "Al-Te",
      "el1": "Al",
      "el2": "Te",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.7809,
      "exp_eV": 2.778,
      "error_pct": 0.104,
      "abs_error_eV": 0.0029
    },
    {
      "bond": "Al-Ti",
      "el1": "Al",
      "el2": "Ti",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.1118,
      "exp_eV": 2.114,
      "error_pct": -0.1032,
      "abs_error_eV": 0.0022
    },
    {
      "bond": "Al-V",
      "el1": "Al",
      "el2": "V",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.5371,
      "exp_eV": 1.534,
      "error_pct": 0.2009,
      "abs_error_eV": 0.0031
    },
    {
      "bond": "Al-Zn",
      "el1": "Al",
      "el2": "Zn",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.1063,
      "exp_eV": 1.099,
      "error_pct": 0.6644,
      "abs_error_eV": 0.0073
    },
    {
      "bond": "As-As",
      "el1": "As",
      "el2": "As",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.963,
      "exp_eV": 3.96,
      "error_pct": 0.0768,
      "abs_error_eV": 0.003
    },
    {
      "bond": "As-Br",
      "el1": "As",
      "el2": "Br",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.4215,
      "exp_eV": 3.42,
      "error_pct": 0.0444,
      "abs_error_eV": 0.0015
    },
    {
      "bond": "As-Cl",
      "el1": "As",
      "el2": "Cl",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 4.2114,
      "exp_eV": 4.22,
      "error_pct": -0.2029,
      "abs_error_eV": 0.0086
    },
    {
      "bond": "As-F",
      "el1": "As",
      "el2": "F",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 4.9283,
      "exp_eV": 4.92,
      "error_pct": 0.1688,
      "abs_error_eV": 0.0083
    },
    {
      "bond": "As-H",
      "el1": "As",
      "el2": "H",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.9596,
      "exp_eV": 2.96,
      "error_pct": -0.0141,
      "abs_error_eV": 0.0004
    },
    {
      "bond": "As-I",
      "el1": "As",
      "el2": "I",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.5893,
      "exp_eV": 2.6,
      "error_pct": -0.4101,
      "abs_error_eV": 0.0107
    },
    {
      "bond": "As-O",
      "el1": "As",
      "el2": "O",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.7479,
      "exp_eV": 3.74,
      "error_pct": 0.2104,
      "abs_error_eV": 0.0079
    },
    {
      "bond": "As-O",
      "el1": "As",
      "el2": "O",
      "bond_order": 2,
      "bond_type": "double",
      "predicted_eV": 4.7965,
      "exp_eV": 4.8,
      "error_pct": -0.0722,
      "abs_error_eV": 0.0035
    },
    {
      "bond": "As-S",
      "el1": "As",
      "el2": "S",
      "bond_order": 2,
      "bond_type": "double",
      "predicted_eV": 3.963,
      "exp_eV": 3.97,
      "error_pct": -0.1753,
      "abs_error_eV": 0.007
    },
    {
      "bond": "As-Sb",
      "el1": "As",
      "el2": "Sb",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.4164,
      "exp_eV": 3.42,
      "error_pct": -0.1041,
      "abs_error_eV": 0.0036
    },
    {
      "bond": "As-Se",
      "el1": "As",
      "el2": "Se",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.794,
      "exp_eV": 2.809,
      "error_pct": -0.533,
      "abs_error_eV": 0.015
    },
    {
      "bond": "As-Te",
      "el1": "As",
      "el2": "Te",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.25,
      "exp_eV": 2.259,
      "error_pct": -0.3979,
      "abs_error_eV": 0.009
    },
    {
      "bond": "Au-Ag",
      "el1": "Au",
      "el2": "Ag",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.1025,
      "exp_eV": 2.094,
      "error_pct": 0.4062,
      "abs_error_eV": 0.0085
    },
    {
      "bond": "Au-Au",
      "el1": "Au",
      "el2": "Au",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.2916,
      "exp_eV": 2.29,
      "error_pct": 0.0678,
      "abs_error_eV": 0.0016
    },
    {
      "bond": "Au-Br",
      "el1": "Au",
      "el2": "Br",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.9235,
      "exp_eV": 2.93,
      "error_pct": -0.2214,
      "abs_error_eV": 0.0065
    },
    {
      "bond": "Au-Cl",
      "el1": "Au",
      "el2": "Cl",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.2631,
      "exp_eV": 3.27,
      "error_pct": -0.211,
      "abs_error_eV": 0.0069
    },
    {
      "bond": "Au-Co",
      "el1": "Au",
      "el2": "Co",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.3424,
      "exp_eV": 2.342,
      "error_pct": 0.0181,
      "abs_error_eV": 0.0004
    },
    {
      "bond": "Au-Cr",
      "el1": "Au",
      "el2": "Cr",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.215,
      "exp_eV": 2.208,
      "error_pct": 0.3173,
      "abs_error_eV": 0.007
    },
    {
      "bond": "Au-Cu",
      "el1": "Au",
      "el2": "Cu",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 2.3417,
      "exp_eV": 2.342,
      "error_pct": -0.0126,
      "abs_error_eV": 0.0003
    },
    {
      "bond": "Au-F",
      "el1": "Au",
      "el2": "F",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.293,
      "exp_eV": 3.3,
      "error_pct": -0.212,
      "abs_error_eV": 0.007
    },
    {
      "bond": "Au-Fe",
      "el1": "Au",
      "el2": "Fe",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 1.9586,
      "exp_eV": 1.948,
      "error_pct": 0.5419,
      "abs_error_eV": 0.0106
    },
    {
      "bond": "Au-H",
      "el1": "Au",
      "el2": "H",
      "bond_order": 1,
      "bond_type": "single",
      "predicted_eV": 3.3621,
      "exp_eV": 3.36,
      "error_pct": 0.0615,
      "abs_error_eV": 0.0021
    },
    {
      "bond": "Au-Hg",
      "el1": "Au",
      "el2": "Hg",
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}