|   | Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology | 
| You are here: Calculated > Geometry > Bad Calculations > Bad Calculated Bond Lengths OR Resources > Bad Calculations > Geometry > Bad Calculated Bond Lengths | |
| Species | Name | Bond type | Bond Length (Å) | ||
|---|---|---|---|---|---|
| Experimental | Calculated | Difference | |||
| H2ONH3 | Water Ammonia Dimer | rNH | 2.983 | 2.053 | -0.930 | 
| C4H4N2O2 | Uracil | rNH | 0.836 | 1.006 | 0.170 | 
| C4H4N2O2 | Uracil | rCH | 0.931 | 1.078 | 0.147 | 
| C4H4N2O2 | Uracil | rNH | 0.877 | 1.010 | 0.133 | 
| C4H4N2O2 | Uracil | rCH | 0.957 | 1.081 | 0.124 | 
| C(CH3)3NH2 | 2-Propanamine, 2-methyl- | rNH | 1.048 | 1.468 | 0.420 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCH | 1.117 | 2.421 | 1.304 | 
| C4H10O | Ethanol, 1,1-dimethyl- | rCO | 1.446 | 2.171 | 0.725 | 
| C4H8S | Thiophene, tetrahydro- | rCC | 1.532 | 3.295 | 1.763 | 
| C4H8S | Thiophene, tetrahydro- | rCH | 1.117 | 1.837 | 0.720 | 
| C4H8S | Thiophene, tetrahydro- | rCS | 1.835 | 2.158 | 0.323 | 
| C2F4 | Tetrafluoroethylene | rCF | 1.319 | 1.426 | 0.107 | 
| C2Cl4 | Tetrachloroethylene | rCCl | 1.718 | 1.579 | -0.139 | 
| C3H3NO | Isoxazole | rCH | 1.075 | 1.419 | 0.344 | 
| C2H4O3 | trioxolane124 | rCN | 1.303 | 1.407 | 0.104 | 
| CF3CN | Acetonitrile, trifluoro- | rCF | 1.328 | 1.429 | 0.101 | 
| CH3CF3 | Ethane, 1,1,1-trifluoro- | rCF | 1.340 | 1.664 | 0.324 | 
| C4H10O | Methyl propyl ether | rCC | 1.530 | 1.093 | -0.437 | 
| C4H10O | Methyl propyl ether | rCH | 1.099 | 1.402 | 0.303 | 
| 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 | 2.112 | 0.290 | 
| 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 | 4.194 | 3.109 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 3.411 | 2.324 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.476 | 2.255 | 0.779 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 1.826 | 0.739 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.776 | 0.678 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.758 | 0.660 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.070 | 1.506 | 0.436 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.515 | 1.090 | -0.425 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.300 | 1.507 | 0.207 | 
| CH3SO2NH2 | methanesulfonamide | rCN | 1.207 | 1.684 | 0.477 | 
| KCl | Potassium Chloride | rKCl | 2.667 | 2.809 | 0.142 | 
| H2SO4 | Sulfuric acid | rOH | 0.970 | 2.862 | 1.892 | 
| KH | Potassium hydride | rKH | 2.243 | 2.343 | 0.100 | 
| KBr | Potassium Bromide | rKBr | 2.821 | 2.955 | 0.134 | 
| PF3 | Phosphorus trifluoride | rFP | 1.561 | 1.681 | 0.120 | 
| SiF4 | Silicon tetrafluoride | rSiF | 1.554 | 1.713 | 0.159 | 
| AsF5 | Arsenic pentafluoride | rAsF | 1.711 | 1.921 | 0.210 | 
| AsF5 | Arsenic pentafluoride | rAsF | 1.656 | 1.835 | 0.179 | 
| KF | Potassium Fluoride | rKF | 2.171 | 2.297 | 0.125 | 
| CaBr2 | Calcium dibromide | rCaBr | 2.616 | 2.735 | 0.119 | 
| CaBr | Calcium monobromide | rCaBr | 2.594 | 2.781 | 0.187 | 
| NO3 | Nitrogen trioxide | rNO | 1.238 | 1.348 | 0.111 | 
| GaP | Gallium monophosphide | rPGa | 2.450 | 2.254 | -0.196 | 
| SiP | Silicon monophosphide | rSiP | 2.078 | 1.977 | -0.101 | 
| CaOH | Calcium monohydroxide | rOCa | 1.976 | 2.153 | 0.177 | 
| Na2Cl2 | Disodium dichloride | rNaCl | 2.584 | 3.279 | 0.695 | 
| ClOOCl | Dichlorine dioxide | rOCl | 1.704 | 1.575 | -0.129 | 
| NaO | sodium monoxide | rONa | 2.052 | 1.862 | -0.190 | 
| Ar2 | Argon diatomic | rArAr | 3.758 | 4.111 | 0.353 | 
| Ar2+ | Argon diatomic cation | rArAr | 2.320 | 2.535 | 0.215 | 
| Si2 | Silicon diatomic | rSiSi | 2.246 | 2.144 | -0.102 | 
| AlCl | Aluminum monochloride | rAlCl | 2.130 | 2.420 | 0.289 | 
| B2Cl4 | Diboron tetrachloride | rBB | 1.702 | 1.546 | -0.156 | 
| CaF | Calcium monofluoride | rFCa | 1.967 | 2.280 | 0.313 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.040 | 2.288 | 0.248 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.240 | 2.088 | -0.152 | 
| HSSSH | trisulfane | rHS | 1.344 | 2.075 | 0.732 | 
| B2F4 | Diboron tetrafluoride | rBB | 1.720 | 1.501 | -0.219 | 
| B2F4 | Diboron tetrafluoride | rBF | 1.317 | 1.439 | 0.122 | 
| Li2+ | lithium diatomic cation | rLiLi | 3.112 | 2.937 | -0.175 | 
| Be2 | Beryllium diatomic | rBeBe | 2.460 | 1.939 | -0.521 | 
| B2 | Boron diatomic | rBB | 1.590 | 1.434 | -0.156 | 
| CaH | Calcium monohydride | rCaH | 2.003 | 2.166 | 0.164 | 
| CaCl | calcium monochloride | rClCa | 2.437 | 2.651 | 0.215 | 
| CaS | Calcium sulfide | rSCa | 2.318 | 2.546 | 0.229 | 
| AlP | Aluminum monophosphide | rAlP | 2.400 | 2.223 | -0.177 | 
| AlP | Aluminum monophosphide | rAlP | 2.260 | 2.088 | -0.172 | 
| Mg2 | Magnesium diatomic | rMgMg | 3.891 | 2.683 | -1.208 | 
| Al2 | Aluminum diatomic | rAlAl | 2.701 | 2.516 | -0.185 | 
| CaC | Calcium monocarbide | rCCa | 2.302 | 2.487 | 0.186 |