return to home page 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

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/6-311+G(3df,2p)

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.228 3.143
C4H6 1-Methylcyclopropene rCH 1.087 3.423 2.336
C4H6 1-Methylcyclopropene rCC 1.476 2.267 0.791
C4H6 1-Methylcyclopropene rCH 1.087 1.839 0.752
CH3CH2SH ethanethiol rCH 1.095 1.837 0.742
CH3CH2SH ethanethiol rCH 1.095 1.832 0.737
S4 Sulfur tetramer rSS 2.155 2.865 0.710
C4H6 1-Methylcyclopropene rCH 1.098 1.787 0.689
C4H6 1-Methylcyclopropene rCH 1.098 1.765 0.667
C4H6 1-Methylcyclopropene rCH 1.070 1.512 0.442
CH3CH2SH ethanethiol rCH 1.089 1.525 0.436
CH3CH2SH ethanethiol rCH 1.089 1.523 0.434
CH3CH2SH ethanethiol rCH 1.092 1.525 0.433
CH3CH2SH ethanethiol rCH 1.092 1.523 0.431
C4H10O Methyl propyl ether rCC 1.530 1.100 -0.430
C2H4F2 1,2-difluoroethane rCH 1.093 1.521 0.428
C4H6 1-Methylcyclopropene rCC 1.515 1.099 -0.416
C2H4F2 1,2-difluoroethane rCH 1.093 1.505 0.412
S4 Sulfur tetramer rSS 2.155 2.549 0.394
CH2CHCH2F Allyl Fluoride rHC 1.130 1.493 0.363
CH2CHCH2F Allyl Fluoride rHC 1.130 1.492 0.362
C3H3NO Isoxazole rCH 1.075 1.422 0.347
C4H10O Methyl propyl ether rCH 1.099 1.414 0.315
CH3CH2SH ethanethiol rCC 1.528 1.837 0.309
CH3CH2SH ethanethiol rCC 1.528 1.832 0.304
CH3CH2SH ethanethiol rCS 1.820 1.523 -0.297
CH3CH2SH ethanethiol rCS 1.820 1.525 -0.295
ONNO NO dimer rNN 2.236 1.949 -0.287
C2H2+ acetylene cation rCH 1.077 1.325 0.248
Si2H2 disilyne rSiSi 2.215 1.984 -0.231
S4 Sulfur tetramer rSS 1.898 2.128 0.230
Ar2 Argon diatomic rArAr 3.758 3.973 0.215
C4H6 1-Methylcyclopropene rCC 1.300 1.512 0.212
Si2H2 disilyne rSiH 1.668 1.474 -0.194
N2 Nitrogen diatomic rNN 1.098 1.289 0.191
N2 Nitrogen diatomic rNN 1.098 1.289 0.191
S3 Sulfur trimer rSS 1.917 2.089 0.172
Si2H2 disilyne rSiH 1.668 1.506 -0.162
N2 Nitrogen diatomic rNN 1.213 1.103 -0.109
N2 Nitrogen diatomic rNN 1.213 1.103 -0.109
N2 Nitrogen diatomic rNN 1.213 1.103 -0.109
N2 Nitrogen diatomic rNN 1.213 1.103 -0.109
Si2H2 disilyne rSiSi 2.215 2.107 -0.108
He2+ helium diatomic cation rHeHe 1.081 1.176 0.095
Si2H2 disilyne rSiSi 2.215 2.125 -0.090
SiP Silicon monophosphide rSiP 2.078 1.991 -0.087
N2O4 Dinitrogen tetroxide rNN 1.782 1.861 0.079
N2 Nitrogen diatomic rNN 1.213 1.289 0.076
N2 Nitrogen diatomic rNN 1.213 1.289 0.076
C4H8O2 Ethyl acetate rCO 1.448 1.514 0.066
Si2H2 disilyne rSiH 1.668 1.726 0.058
FSN Thiazyl fluoride rFS 1.643 1.701 0.058
C2H2+ acetylene cation rCC 1.253 1.310 0.057
HCO Formyl radical rCH 1.080 1.135 0.055
GaCl3 Gallium trichloride rClGa 2.180 2.126 -0.054
KOH Potassium hydroxide rOH 0.912 0.964 0.052
HN3 hydrogen azide rNH 0.975 1.026 0.051
GaAs Gallium arsenide rGaAs 2.530 2.580 0.050
SeF4 Selenium tetrafluoride rFSe 1.682 1.732 0.050
59 molecules.