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Bad Calculated Bond Lengths

List of molecules with calculated bond lengths that differ by more than 0.050 Å from experimental bond lengths.

Calculated at PBEPBEultrafine/6-31+G**

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 1.879 -1.104
C3H3NO Isoxazole rCH 1.075 1.427 0.352
C4H10O Methyl propyl ether rCC 1.530 1.104 -0.426
C4H10O Methyl propyl ether rCH 1.099 1.419 0.320
CaO Calcium monoxide rOCa 1.822 2.060 0.238
C4H6 1-Methylcyclopropene rCH 1.085 4.249 3.164
C4H6 1-Methylcyclopropene rCH 1.087 3.437 2.350
C4H6 1-Methylcyclopropene rCC 1.476 2.276 0.800
C4H6 1-Methylcyclopropene rCH 1.087 1.844 0.757
C4H6 1-Methylcyclopropene rCH 1.098 1.793 0.695
C4H6 1-Methylcyclopropene rCH 1.098 1.772 0.674
C4H6 1-Methylcyclopropene rCH 1.070 1.518 0.448
C4H6 1-Methylcyclopropene rCC 1.515 1.103 -0.412
C4H6 1-Methylcyclopropene rCC 1.300 1.517 0.217
CH3SO2NH2 methanesulfonamide rCN 1.207 1.716 0.510
CaBr Calcium monobromide rCaBr 2.594 2.716 0.122
GaP Gallium monophosphide rPGa 2.450 2.216 -0.234
Ne2+ Neon diatomic cation rNeNe 1.765 1.914 0.149
ClOOCl Dichlorine dioxide rOCl 1.704 1.940 0.236
ClOOCl Dichlorine dioxide rOO 1.426 1.264 -0.162
Ar2+ Argon diatomic cation rArAr 2.320 2.672 0.352
Ar2 Argon diatomic rArAr 3.758 4.081 0.323
S4 Sulfur tetramer rSS 2.155 2.473 0.318
CaS Calcium sulfide rSCa 2.318 2.494 0.176
AlP Aluminum monophosphide rAlP 2.400 2.234 -0.166
AlP Aluminum monophosphide rAlP 2.220 2.094 -0.126
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.725 0.122
CaC Calcium monocarbide rCCa 2.302 2.455 0.153
28 molecules.