|   | 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 | 2.027 | -0.956 | 
| C4H4N2O2 | Uracil | rNH | 0.836 | 1.012 | 0.176 | 
| C4H4N2O2 | Uracil | rCH | 0.931 | 1.076 | 0.145 | 
| C4H4N2O2 | Uracil | rNH | 0.877 | 1.014 | 0.137 | 
| C4H4N2O2 | Uracil | rCH | 0.957 | 1.081 | 0.124 | 
| C(CH3)3NH2 | 2-Propanamine, 2-methyl- | rNH | 1.048 | 1.484 | 0.436 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCH | 1.117 | 2.458 | 1.341 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCO | 1.446 | 2.177 | 0.731 | 
| C4H8S | Thiophene, tetrahydro- | rCC | 1.532 | 3.298 | 1.766 | 
| C4H8S | Thiophene, tetrahydro- | rCH | 1.117 | 1.842 | 0.725 | 
| C4H8S | Thiophene, tetrahydro- | rCS | 1.835 | 2.173 | 0.338 | 
| C2F4 | Tetrafluoroethylene | rCF | 1.319 | 1.427 | 0.108 | 
| C2Cl4 | Tetrachloroethylene | rCCl | 1.718 | 1.579 | -0.139 | 
| C3H3NO | Isoxazole | rCH | 1.075 | 1.429 | 0.354 | 
| C2H4O3 | trioxolane124 | rCN | 1.303 | 1.446 | 0.143 | 
| CF3CN | Acetonitrile, trifluoro- | rCF | 1.328 | 1.431 | 0.103 | 
| CH3CF3 | Ethane, 1,1,1-trifluoro- | rCF | 1.340 | 1.664 | 0.324 | 
| C4H10O | Methyl propyl ether | rCC | 1.530 | 1.096 | -0.434 | 
| C4H10O | Methyl propyl ether | rCH | 1.099 | 1.443 | 0.344 | 
| CH3SCH2CH3 | Ethane, (methylthio)- | rCS | 1.804 | 1.634 | -0.170 | 
| CH3SCH2CH3 | Ethane, (methylthio)- | rCS | 1.804 | 1.635 | -0.169 | 
| CaO | Calcium monoxide | rOCa | 1.822 | 2.035 | 0.213 | 
| ZnS | Zinc sulfide | rSZn | 2.046 | 1.929 | -0.117 | 
| CuO | Copper Monoxide | rCuO | 1.724 | 1.596 | -0.128 | 
| CF3 | Trifluoromethyl radical | rCF | 1.318 | 1.430 | 0.112 | 
| HOCO+ | Hydrocarboxyl cation | rCO | 1.209 | 1.354 | 0.145 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.085 | 4.197 | 3.112 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 3.433 | 2.346 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.476 | 2.271 | 0.795 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 1.837 | 0.750 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.782 | 0.684 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.767 | 0.669 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.070 | 1.531 | 0.461 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.515 | 1.088 | -0.427 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.300 | 1.534 | 0.234 | 
| CH3SO2NH2 | methanesulfonamide | rCN | 1.207 | 1.636 | 0.429 | 
| H2SO4 | Sulfuric acid | rOH | 0.970 | 2.915 | 1.945 | 
| PF3 | Phosphorus trifluoride | rFP | 1.561 | 1.670 | 0.109 | 
| SiF4 | Silicon tetrafluoride | rSiF | 1.554 | 1.713 | 0.159 | 
| AsF5 | Arsenic pentafluoride | rAsF | 1.711 | 1.919 | 0.208 | 
| AsF5 | Arsenic pentafluoride | rAsF | 1.656 | 1.836 | 0.180 | 
| LiK | Lithium Potassium | rLiK | 3.270 | 3.371 | 0.101 | 
| NO3 | Nitrogen trioxide | rNO | 1.238 | 1.419 | 0.182 | 
| GaP | Gallium monophosphide | rPGa | 2.450 | 2.254 | -0.196 | 
| SiP | Silicon monophosphide | rSiP | 2.078 | 1.964 | -0.113 | 
| Cu2 | Copper diatomic | rCuCu | 2.220 | 2.061 | -0.158 | 
| Na2Cl2 | Disodium dichloride | rNaCl | 2.584 | 3.264 | 0.680 | 
| ClOOCl | Dichlorine dioxide | rOCl | 1.704 | 1.571 | -0.134 | 
| NaLi | lithium sodium | rLiNa | 2.889 | 3.004 | 0.115 | 
| NaO | sodium monoxide | rONa | 2.052 | 1.825 | -0.226 | 
| Ar2+ | Argon diatomic cation | rArAr | 2.320 | 2.566 | 0.246 | 
| Si2 | Silicon diatomic | rSiSi | 2.246 | 2.132 | -0.114 | 
| CuF | Copper monofluoride | rCuF | 1.745 | 1.607 | -0.138 | 
| AlCl | Aluminum monochloride | rAlCl | 2.130 | 2.420 | 0.289 | 
| B2Cl4 | Diboron tetrachloride | rBB | 1.702 | 1.547 | -0.155 | 
| CaF | Calcium monofluoride | rFCa | 1.967 | 2.280 | 0.313 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.040 | 2.284 | 0.244 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.240 | 2.084 | -0.156 | 
| HSSSH | trisulfane | rHS | 1.344 | 2.064 | 0.720 | 
| B2F4 | Diboron tetrafluoride | rBB | 1.720 | 1.502 | -0.218 | 
| B2F4 | Diboron tetrafluoride | rBF | 1.317 | 1.441 | 0.124 | 
| Li2+ | lithium diatomic cation | rLiLi | 3.112 | 2.954 | -0.158 | 
| Be2 | Beryllium diatomic | rBeBe | 2.460 | 1.939 | -0.521 | 
| B2 | Boron diatomic | rBB | 1.590 | 1.445 | -0.145 | 
| CaH | Calcium monohydride | rCaH | 2.003 | 2.173 | 0.171 | 
| CaCl | calcium monochloride | rClCa | 2.437 | 2.623 | 0.186 | 
| CaS | Calcium sulfide | rSCa | 2.318 | 2.517 | 0.199 | 
| AlP | Aluminum monophosphide | rAlP | 2.220 | 2.079 | -0.141 | 
| Na2 | Sodium diatomic | rNaNa | 3.079 | 3.194 | 0.115 | 
| K2 | Potassium diatomic | rKK | 3.905 | 4.053 | 0.148 | 
| Mg2 | Magnesium diatomic | rMgMg | 3.891 | 2.683 | -1.208 | 
| Al2 | Aluminum diatomic | rAlAl | 2.701 | 2.501 | -0.200 | 
| ZnCN | Zinc monocyanide | rCZn | 1.950 | 1.836 | -0.114 |