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IV.D.7. (XVIII.A.2.)

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 MP2FC/cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H8N2 Ethylenediamine rCH 1.109 2.728 1.619
C6H8 1,4-Cyclohexadiene rCC 1.347 2.533 1.186
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.342 0.912
Be2 Beryllium diatomic rBeBe 2.460 2.021 -0.439
C4H6O2 2,3-Butanedione rCH 1.114 1.537 0.423
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.524 0.411
CH2ClCH2CH3 Propane, 1-chloro- rCH 1.113 1.521 0.408
C4H8O2 1,3-Dioxane rCH 1.095 1.402 0.307
Al2 Aluminum diatomic rAlAl 2.701 2.997 0.296
FO2 Dioxygen monofluoride rFO 1.649 1.379 -0.270
C6H8 1,4-Cyclohexadiene rCC 1.511 1.759 0.248
Al2 Aluminum diatomic rAlAl 2.701 2.474 -0.227
B2 Boron diatomic rBB 1.590 1.381 -0.209
CH2CCHCH3 1,2-Butadiene rCC 1.515 1.310 -0.205
CH2CCHCH3 1,2-Butadiene rCC 1.314 1.503 0.189
Si2 Silicon diatomic rSiSi 2.246 2.076 -0.170
Na2+ sodium dimer cation rNaNa 3.540 3.709 0.169
AlN Aluminum nitride rNAl 1.786 1.640 -0.147
Ne2 Neon dimer rNeNe 3.100 2.982 -0.118
NaLi lithium sodium rLiNa 2.889 2.974 0.085
ClF+ clorine monofluoride cation rFCl 1.448 1.529 0.081
C2 Carbon diatomic rCC 1.243 1.317 0.074
SO+ sulfur monoxide cation rOS 1.424 1.350 -0.074
NS Mononitrogen monosulfide rNS 1.497 1.423 -0.074
PS phosphorus sulfide rPS 1.900 1.829 -0.071
B2 Boron diatomic rBB 1.590 1.521 -0.069
CO Carbon monoxide rCO 1.206 1.138 -0.067
CO Carbon monoxide rCO 1.206 1.138 -0.067
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.513 -0.067
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.336 -0.064
CH3CHNOH Acetaldoxime rCC 1.550 1.488 -0.062
HCF Fluoromethylene rCH 1.138 1.082 -0.056
C3H5 Allyl radical rCC 1.428 1.373 -0.055
ClNO2 Nitryl chloride rNCl 1.840 1.893 0.053
ClFO3 Perchloryl fluoride rFCl 1.598 1.649 0.051
BHCl2 Borane, dichloro- rBH 1.130 1.180 0.050
36 molecules.