|   | Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology | 
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| Species | Name | Bond type | Bond Length (Å) | ||
|---|---|---|---|---|---|
| Experimental | Calculated | Difference | |||
| H2ONH3 | Water Ammonia Dimer | rNH | 2.983 | 2.154 | -0.829 | 
| C4H4N2O2 | Uracil | rNH | 0.836 | 0.991 | 0.155 | 
| C4H4N2O2 | Uracil | rCH | 0.931 | 1.068 | 0.137 | 
| C4H4N2O2 | Uracil | rNH | 0.877 | 0.995 | 0.118 | 
| C4H4N2O2 | Uracil | rCH | 0.957 | 1.072 | 0.115 | 
| C(CH3)3NH2 | 2-Propanamine, 2-methyl- | rNH | 1.048 | 1.463 | 0.415 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCH | 1.117 | 2.404 | 1.287 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCO | 1.446 | 2.165 | 0.719 | 
| C4H8S | Thiophene, tetrahydro- | rCC | 1.532 | 3.290 | 1.758 | 
| C4H8S | Thiophene, tetrahydro- | rCH | 1.117 | 1.829 | 0.712 | 
| C4H8S | Thiophene, tetrahydro- | rCS | 1.835 | 2.149 | 0.314 | 
| C3H3NO | Isoxazole | rCH | 1.075 | 1.427 | 0.352 | 
| CuO | Copper Monoxide | rCuO | 1.724 | 1.871 | 0.147 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.085 | 4.170 | 3.085 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 3.402 | 2.315 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.476 | 2.241 | 0.765 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 1.806 | 0.719 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.762 | 0.664 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.748 | 0.650 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.515 | 1.082 | -0.433 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.070 | 1.494 | 0.424 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.300 | 1.496 | 0.196 | 
| CH3SO2NH2 | methanesulfonamide | rCN | 1.207 | 1.637 | 0.430 | 
| H2SO4 | Sulfuric acid | rOH | 0.970 | 2.813 | 1.843 | 
| CuCl | Copper monochloride | rCuCl | 2.051 | 2.180 | 0.129 | 
| F2+ | flourine diatomic cation | rFF | 1.322 | 1.214 | -0.108 | 
| FNO | Nitrosyl fluoride | rNF | 1.512 | 1.390 | -0.122 | 
| FNO3 | Fluorine nitrate | rNO | 1.507 | 1.385 | -0.122 | 
| FNO2 | Nitryl fluoride | rNF | 1.467 | 1.339 | -0.128 | 
| N2O4 | Dinitrogen tetroxide | rNN | 1.782 | 1.592 | -0.190 | 
| N2O3 | Dinitrogen trioxide | rNN | 1.864 | 1.602 | -0.262 | 
| VO | Vanadium monoxide | rVO | 1.589 | 1.747 | 0.158 | 
| GaP | Gallium monophosphide | rPGa | 2.450 | 2.148 | -0.302 | 
| SiP | Silicon monophosphide | rSiP | 2.078 | 1.970 | -0.107 | 
| Ne2 | Neon diatomic | rNeNe | 3.100 | 3.454 | 0.354 | 
| Cu2 | Copper diatomic | rCuCu | 2.220 | 2.447 | 0.227 | 
| Na2Cl2 | Disodium dichloride | rNaCl | 2.584 | 3.227 | 0.643 | 
| NaLi | lithium sodium | rLiNa | 2.889 | 3.000 | 0.111 | 
| Ar2 | Argon diatomic | rArAr | 3.758 | 5.081 | 1.323 | 
| Ar2+ | Argon diatomic cation | rArAr | 2.320 | 2.438 | 0.118 | 
| Si2 | Silicon diatomic | rSiSi | 2.246 | 2.144 | -0.102 | 
| CuH | Copper monohydride | rCuH | 1.463 | 1.570 | 0.108 | 
| SeO3 | selenium trioxide | rSeO | 1.688 | 1.548 | -0.139 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.040 | 2.286 | 0.246 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.240 | 2.085 | -0.155 | 
| HSSSH | trisulfane | rHS | 1.344 | 2.059 | 0.716 | 
| Li2 | Lithium diatomic | rLiLi | 2.673 | 2.784 | 0.111 | 
| Be2 | Beryllium diatomic | rBeBe | 2.460 | 2.048 | -0.412 | 
| B2 | Boron diatomic | rBB | 1.590 | 1.457 | -0.133 | 
| S4 | Sulfur tetramer | rSS | 2.155 | 1.969 | -0.186 | 
| AlP | Aluminum monophosphide | rAlP | 2.260 | 2.117 | -0.143 | 
| AlP | Aluminum monophosphide | rAlP | 2.400 | 2.268 | -0.132 | 
| Na2 | Sodium diatomic | rNaNa | 3.079 | 3.194 | 0.115 | 
| Mg2 | Magnesium diatomic | rMgMg | 3.891 | 7.343 | 3.452 | 
| Al2 | Aluminum diatomic | rAlAl | 2.701 | 2.549 | -0.152 | 
| ONNO | NO dimer | rNN | 2.236 | 1.516 | -0.720 |