|   | 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 | 2.050 | -0.933 | 
| C4H4N2O2 | Uracil | rNH | 0.836 | 1.009 | 0.173 | 
| C4H4N2O2 | Uracil | rCH | 0.931 | 1.080 | 0.149 | 
| C4H4N2O2 | Uracil | rNH | 0.877 | 1.012 | 0.135 | 
| C4H4N2O2 | Uracil | rCH | 0.957 | 1.083 | 0.126 | 
| C(CH3)3NH2 | 2-Propanamine, 2-methyl- | rNH | 1.048 | 1.470 | 0.422 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCH | 1.117 | 2.424 | 1.307 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCO | 1.446 | 2.178 | 0.732 | 
| C4H8S | Thiophene, tetrahydro- | rCC | 1.532 | 3.299 | 1.767 | 
| C4H8S | Thiophene, tetrahydro- | rCH | 1.117 | 1.836 | 0.719 | 
| C4H8S | Thiophene, tetrahydro- | rCS | 1.835 | 2.164 | 0.329 | 
| C2F4 | Tetrafluoroethylene | rCF | 1.319 | 1.426 | 0.107 | 
| C2Cl4 | Tetrachloroethylene | rCCl | 1.718 | 1.579 | -0.139 | 
| C3H3NO | Isoxazole | rCH | 1.075 | 1.422 | 0.347 | 
| C2H4O3 | trioxolane124 | rCN | 1.303 | 1.410 | 0.107 | 
| CF3CN | Acetonitrile, trifluoro- | rCF | 1.328 | 1.429 | 0.101 | 
| CH3CF3 | Ethane, 1,1,1-trifluoro- | rCF | 1.340 | 1.665 | 0.325 | 
| C4H10O | Methyl propyl ether | rCC | 1.530 | 1.096 | -0.434 | 
| C4H10O | Methyl propyl ether | rCH | 1.099 | 1.404 | 0.305 | 
| CH3SCH2CH3 | Ethane, (methylthio)- | rCS | 1.804 | 1.636 | -0.168 | 
| CH3SCH2CH3 | Ethane, (methylthio)- | rCS | 1.804 | 1.636 | -0.168 | 
| CaO | Calcium monoxide | rOCa | 1.822 | 2.035 | 0.213 | 
| CF3 | Trifluoromethyl radical | rCF | 1.318 | 1.431 | 0.113 | 
| HOCO+ | Hydrocarboxyl cation | rCO | 1.209 | 1.337 | 0.128 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.085 | 4.212 | 3.127 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 3.420 | 2.333 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.476 | 2.262 | 0.786 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 1.829 | 0.742 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.780 | 0.682 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.762 | 0.664 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.070 | 1.509 | 0.439 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.515 | 1.094 | -0.421 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.300 | 1.511 | 0.211 | 
| CH3SO2NH2 | methanesulfonamide | rCN | 1.207 | 1.677 | 0.470 | 
| H2SO4 | Sulfuric acid | rOH | 0.970 | 2.867 | 1.897 | 
| PF3 | Phosphorus trifluoride | rFP | 1.561 | 1.680 | 0.119 | 
| SiF4 | Silicon tetrafluoride | rSiF | 1.554 | 1.713 | 0.159 | 
| AsF5 | Arsenic pentafluoride | rAsF | 1.711 | 1.924 | 0.213 | 
| AsF5 | Arsenic pentafluoride | rAsF | 1.656 | 1.833 | 0.177 | 
| CaBr | Calcium monobromide | rCaBr | 2.594 | 2.706 | 0.113 | 
| NO3 | Nitrogen trioxide | rNO | 1.238 | 1.346 | 0.108 | 
| GaP | Gallium monophosphide | rPGa | 2.450 | 2.217 | -0.233 | 
| SiP | Silicon monophosphide | rSiP | 2.078 | 1.974 | -0.103 | 
| CaOH | Calcium monohydroxide | rOCa | 1.976 | 2.114 | 0.138 | 
| Na2Cl2 | Disodium dichloride | rNaCl | 2.584 | 3.254 | 0.670 | 
| ClOOCl | Dichlorine dioxide | rOCl | 1.704 | 1.574 | -0.130 | 
| NaO | sodium monoxide | rONa | 2.052 | 1.861 | -0.191 | 
| Ar2 | Argon diatomic | rArAr | 3.758 | 4.114 | 0.356 | 
| Ar2+ | Argon diatomic cation | rArAr | 2.320 | 2.556 | 0.236 | 
| Si2 | Silicon diatomic | rSiSi | 2.246 | 2.143 | -0.104 | 
| 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 | 2.286 | 0.246 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.240 | 2.085 | -0.155 | 
| HSSSH | trisulfane | rHS | 1.344 | 2.071 | 0.728 | 
| B2F4 | Diboron tetrafluoride | rBB | 1.720 | 1.505 | -0.215 | 
| B2F4 | Diboron tetrafluoride | rBF | 1.317 | 1.441 | 0.124 | 
| Li2+ | lithium diatomic cation | rLiLi | 3.112 | 2.966 | -0.146 | 
| Be2 | Beryllium diatomic | rBeBe | 2.460 | 1.939 | -0.521 | 
| B2 | Boron diatomic | rBB | 1.590 | 1.440 | -0.150 | 
| CaH | Calcium monohydride | rCaH | 2.003 | 2.109 | 0.106 | 
| CaCl | calcium monochloride | rClCa | 2.437 | 2.566 | 0.129 | 
| TiCl | Titanium Monochloride | rClTi | 2.265 | 2.371 | 0.107 | 
| CaS | Calcium sulfide | rSCa | 2.318 | 2.465 | 0.148 | 
| AlP | Aluminum monophosphide | rAlP | 2.220 | 2.087 | -0.133 | 
| K2 | Potassium diatomic | rKK | 3.905 | 4.007 | 0.101 | 
| Mg2 | Magnesium diatomic | rMgMg | 3.891 | 2.683 | -1.208 | 
| Al2 | Aluminum diatomic | rAlAl | 2.701 | 2.515 | -0.186 |