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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 CID/daug-cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
CH3CH2SH ethanethiol rCH 1.095 1.818 0.723
S4 Sulfur tetramer rSS 2.155 2.848 0.693
ONNO NO dimer rNN 2.236 1.579 -0.657
CH3CH2SH ethanethiol rCH 1.089 1.517 0.428
CH3CH2SH ethanethiol rCH 1.092 1.517 0.425
C2H4F2 1,2-difluoroethane rCH 1.093 1.506 0.413
S4 Sulfur tetramer rSS 2.155 2.473 0.318
CH3CH2SH ethanethiol rCS 1.820 1.517 -0.303
CH3CH2SH ethanethiol rCC 1.528 1.818 0.290
Si2H2 disilyne rSiSi 2.215 1.964 -0.252
C2H2+ acetylene cation rCH 1.077 1.308 0.231
Si2H2 disilyne rSiH 1.668 1.456 -0.212
S4 Sulfur tetramer rSS 1.898 2.102 0.204
Si2H2 disilyne rSiH 1.668 1.484 -0.184
N2O4 Dinitrogen tetroxide rNN 1.782 1.622 -0.160
S4 Sulfur tetramer rSS 2.155 2.012 -0.143
Ar2 Argon diatomic rArAr 3.758 3.890 0.132
Si2H2 disilyne rSiSi 2.215 2.090 -0.125
N2 Nitrogen diatomic rNN 1.213 1.087 -0.125
N2 Nitrogen diatomic rNN 1.213 1.087 -0.125
Si2H2 disilyne rSiSi 2.215 2.104 -0.112
N2 Nitrogen diatomic rNN 1.098 1.199 0.102
N2 Nitrogen diatomic rNN 1.098 1.199 0.102
Na2 Sodium diatomic rNaNa 3.079 3.177 0.098
SiP Silicon monophosphide rSiP 2.078 1.981 -0.097
FNO Nitrosyl fluoride rNF 1.512 1.436 -0.076
NaLi lithium sodium rLiNa 2.889 2.952 0.063
H2O2 Hydrogen peroxide rOO 1.475 1.416 -0.059
HCF Fluoromethylene rCH 1.138 1.079 -0.059
F2+ flourine diatomic cation rFF 1.322 1.264 -0.058
ClNO Nitrosyl chloride rNCl 1.975 1.918 -0.057
HNO3 Nitric acid rNO 1.406 1.352 -0.054
Si2H2 disilyne rSiH 1.668 1.719 0.051
33 molecules.