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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 B2PLYP=FULL/daug-cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.231 3.146
C4H6 1-Methylcyclopropene rCH 1.087 3.435 2.348
C4H6 1-Methylcyclopropene rCC 1.476 2.271 0.795
S4 Sulfur tetramer rSS 2.155 2.914 0.759
CH3CH2SH ethanethiol rCH 1.095 1.847 0.752
C4H6 1-Methylcyclopropene rCH 1.087 1.836 0.749
CH3CH2SH ethanethiol rCH 1.095 1.843 0.748
C4H6 1-Methylcyclopropene rCH 1.098 1.786 0.688
C4H6 1-Methylcyclopropene rCH 1.098 1.769 0.671
S4 Sulfur tetramer rSS 2.155 2.648 0.493
S4 Sulfur tetramer rSS 2.155 2.648 0.493
C4H6 1-Methylcyclopropene rCH 1.070 1.517 0.447
CH3CH2SH ethanethiol rCH 1.089 1.527 0.438
CH3CH2SH ethanethiol rCH 1.089 1.525 0.436
CH3CH2SH ethanethiol rCH 1.092 1.527 0.435
CH3CH2SH ethanethiol rCH 1.092 1.525 0.433
C2H4F2 1,2-difluoroethane rCH 1.093 1.517 0.424
C4H6 1-Methylcyclopropene rCC 1.515 1.096 -0.419
C2H4F2 1,2-difluoroethane rCH 1.093 1.505 0.412
CH2CHCH2F Allyl Fluoride rHC 1.130 1.497 0.367
CH2CHCH2F Allyl Fluoride rHC 1.130 1.494 0.364
ONNO NO dimer rNN 2.236 1.880 -0.356
C3H3NO Isoxazole rCH 1.075 1.426 0.351
Ar2 Argon diatomic rArAr 3.758 4.099 0.341
CH3CH2SH ethanethiol rCC 1.528 1.847 0.319
CH3CH2SH ethanethiol rCC 1.528 1.843 0.315
CH3CH2SH ethanethiol rCS 1.820 1.525 -0.295
CH3CH2SH ethanethiol rCS 1.820 1.527 -0.293
S4 Sulfur tetramer rSS 1.898 2.160 0.262
C2H2+ acetylene cation rCH 1.077 1.329 0.252
Si2H2 disilyne rSiSi 2.215 1.993 -0.222
C4H6 1-Methylcyclopropene rCC 1.300 1.520 0.220
Si2H2 disilyne rSiH 1.668 1.465 -0.203
Si2H2 disilyne rSiH 1.668 1.497 -0.171
N2 Nitrogen diatomic rNN 1.098 1.222 0.124
N2 Nitrogen diatomic rNN 1.098 1.222 0.124
N2 Nitrogen diatomic rNN 1.213 1.113 -0.099
N2 Nitrogen diatomic rNN 1.213 1.113 -0.099
N2 Nitrogen diatomic rNN 1.213 1.113 -0.099
N2 Nitrogen diatomic rNN 1.213 1.113 -0.099
Si2H2 disilyne rSiSi 2.215 2.121 -0.095
OClO Chlorine dioxide rClO 1.470 1.546 0.077
Si2H2 disilyne rSiSi 2.215 2.140 -0.075
AlBr Aluminum monobromide rAlBr 2.295 2.368 0.073
C2H2+ acetylene cation rCC 1.253 1.322 0.069
SiP Silicon monophosphide rSiP 2.078 2.009 -0.069
C4H8O2 Ethyl acetate rCO 1.448 1.515 0.067
Si2H2 disilyne rSiH 1.668 1.735 0.067
PF2 Phosphorus difluoride rPF 1.579 1.643 0.064
SiF2 Silicon difluoride rFSi 1.590 1.654 0.064
SO Sulfur monoxide rSO 1.481 1.544 0.063
SO Sulfur monoxide rSO 1.481 1.544 0.063
HSiCl Chlorosilylene rSiCl 2.067 2.129 0.062
SF4 Sulfur tetrafluoride rSF 1.545 1.607 0.062
GaBr Gallium monobromide rGaBr 2.352 2.414 0.062
SO2 Sulfur dioxide rSO 1.432 1.494 0.062
SSO Disulfur monoxide rSO 1.456 1.517 0.061
SF2 sulfur difluoride rSF 1.587 1.647 0.060
SiCl Clorosilylidyne rSiCl 2.061 2.121 0.060
SiH2F2 difluorosilane rSiF 1.576 1.635 0.059
GaCl Gallium monochloride rClGa 2.202 2.260 0.059
SF4 Sulfur tetrafluoride rSF 1.646 1.704 0.058
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.096 0.058
SSO Disulfur monoxide rSS 1.884 1.942 0.058
SiH3F monofluorosilane rSiF 1.595 1.653 0.058
SO3 Sulfur trioxide rSO 1.418 1.476 0.058
CH3SOCH3 Dimethyl sulfoxide rSO 1.485 1.542 0.057
SFCl Sulfur chloride fluoride rFS 1.606 1.663 0.057
GaAs Gallium arsenide rGaAs 2.530 2.586 0.056
Cl2+ chlorine diatomic cation rClCl 1.892 1.948 0.056
SiHF3 trifluorosilane rSiF 1.563 1.618 0.055
Cl2 Chlorine diatomic rClCl 1.988 2.042 0.055
SO Sulfur monoxide rSO 1.481 1.535 0.054
SO Sulfur monoxide rSO 1.481 1.535 0.054
SFCl Sulfur chloride fluoride rSCl 1.994 2.047 0.053
SF Monosulfur monofluoride rSF 1.599 1.653 0.053
AlNC Aluminum isocyanide rAlN 1.855 1.908 0.053
GeCl Germanium monochloride rClGe 2.164 2.216 0.053
HOSH hydrogen thioperoxide rSO 1.662 1.714 0.052
HSiBr monobromosilylene rSiBr 2.237 2.289 0.052
NH2SH Thiohydroxylamine rNS 1.705 1.757 0.052
NH2SH Thiohydroxylamine rNS 1.705 1.757 0.052
GaAs Gallium arsenide rGaAs 2.530 2.581 0.051
SiBr+ Silicon monobromide cation rSiBr 2.095 2.146 0.051
PF5 Phosphorus pentafluoride rPF 1.534 1.585 0.051
85 molecules.