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 MP2=FULL/daug-cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
CH3CH2SH ethanethiol rCH 1.095 1.815 0.720
CH3CH2SH ethanethiol rCH 1.095 1.812 0.717
S4 Sulfur tetramer rSS 2.155 2.827 0.672
S4 Sulfur tetramer rSS 2.155 2.587 0.432
S4 Sulfur tetramer rSS 2.155 2.586 0.431
CH3CH2SH ethanethiol rCH 1.089 1.514 0.425
CH3CH2SH ethanethiol rCH 1.089 1.512 0.423
CH3CH2SH ethanethiol rCH 1.092 1.514 0.422
CH3CH2SH ethanethiol rCH 1.092 1.512 0.420
C2H4F2 1,2-difluoroethane rCH 1.093 1.505 0.412
C2H4F2 1,2-difluoroethane rCH 1.093 1.493 0.400
CH2CHCH2F Allyl Fluoride rHC 1.130 1.485 0.355
CH2CHCH2F Allyl Fluoride rHC 1.130 1.482 0.352
C3H3NO Isoxazole rCH 1.075 1.405 0.330
CH3CH2SH ethanethiol rCS 1.820 1.512 -0.308
CH3CH2SH ethanethiol rCS 1.820 1.514 -0.306
ONNO NO dimer rNN 2.236 1.941 -0.295
CH3CH2SH ethanethiol rCC 1.528 1.815 0.287
CH3CH2SH ethanethiol rCC 1.528 1.812 0.284
Si2H2 disilyne rSiSi 2.215 1.972 -0.243
C2H2+ acetylene cation rCH 1.077 1.299 0.223
Si2H2 disilyne rSiH 1.668 1.450 -0.218
S4 Sulfur tetramer rSS 1.898 2.105 0.207
Si2H2 disilyne rSiH 1.668 1.478 -0.190
Ar2 Argon diatomic rArAr 3.758 3.604 -0.154
Si2H2 disilyne rSiSi 2.215 2.088 -0.127
N2 Nitrogen diatomic rNN 1.098 1.213 0.115
N2 Nitrogen diatomic rNN 1.098 1.213 0.115
Si2H2 disilyne rSiSi 2.215 2.107 -0.108
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
GaO Gallium monoxide rOGa 1.743 1.652 -0.091
SiP Silicon monophosphide rSiP 2.078 1.988 -0.090
BrO+ Bromine monoxide cation rOBr 1.635 1.574 -0.061
HCF Fluoromethylene rCH 1.138 1.077 -0.061
C2H2+ acetylene cation rCC 1.253 1.312 0.059
C4H8O2 Ethyl acetate rCO 1.448 1.503 0.055
GaAs Gallium arsenide rGaAs 2.530 2.479 -0.051
40 molecules.