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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=FULLultrafine/aug-cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.233 3.148
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 2.912 0.757
CH3CH2SH ethanethiol rCH 1.095 1.847 0.752
C4H6 1-Methylcyclopropene rCH 1.087 1.837 0.750
CH3CH2SH ethanethiol rCH 1.095 1.843 0.748
C4H6 1-Methylcyclopropene rCH 1.098 1.787 0.689
C4H6 1-Methylcyclopropene rCH 1.098 1.770 0.672
CH3SO2NH2 methanesulfonamide rCN 1.207 1.713 0.506
S4 Sulfur tetramer rSS 2.155 2.651 0.496
S4 Sulfur tetramer rSS 2.155 2.650 0.495
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
C4H10O Methyl propyl ether rCC 1.530 1.099 -0.431
C2H4F2 1,2-difluoroethane rCH 1.093 1.517 0.424
C4H6 1-Methylcyclopropene rCC 1.515 1.097 -0.418
C2H4F2 1,2-difluoroethane rCH 1.093 1.505 0.412
Ar2 Argon diatomic rArAr 3.758 4.155 0.397
CH2CHCH2F Allyl Fluoride rHC 1.130 1.497 0.367
CH2CHCH2F Allyl Fluoride rHC 1.130 1.494 0.364
C3H3NO Isoxazole rCH 1.075 1.426 0.351
ONNO NO dimer rNN 2.236 1.886 -0.350
GaP Gallium monophosphide rPGa 2.450 2.106 -0.344
GaP Gallium monophosphide rPGa 2.450 2.106 -0.344
GaP Gallium monophosphide rPGa 2.450 2.106 -0.344
GaP Gallium monophosphide rPGa 2.450 2.106 -0.344
CH3CH2SH ethanethiol rCC 1.528 1.847 0.319
C4H10O Methyl propyl ether rCH 1.099 1.417 0.318
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
S3 Sulfur trimer rSS 1.917 2.126 0.209
Si2H2 disilyne rSiH 1.668 1.465 -0.203
Ar2+ Argon diatomic cation rArAr 2.320 2.515 0.195
ClF3 Chlorine trifluoride rFCl 1.597 1.783 0.186
ClF3 Chlorine trifluoride rFCl 1.597 1.783 0.186
GaP Gallium monophosphide rPGa 2.450 2.266 -0.184
GaP Gallium monophosphide rPGa 2.450 2.266 -0.184
GaP Gallium monophosphide rPGa 2.450 2.266 -0.184
GaP Gallium monophosphide rPGa 2.450 2.266 -0.184
Si2H2 disilyne rSiH 1.668 1.497 -0.171
GaP Gallium monophosphide rPGa 2.110 2.266 0.156
GaP Gallium monophosphide rPGa 2.110 2.266 0.156
GaP Gallium monophosphide rPGa 2.110 2.266 0.156
GaP Gallium monophosphide rPGa 2.110 2.266 0.156
GaP Gallium monophosphide rPGa 2.250 2.106 -0.144
GaP Gallium monophosphide rPGa 2.250 2.106 -0.144
GaP Gallium monophosphide rPGa 2.250 2.106 -0.144
GaP Gallium monophosphide rPGa 2.250 2.106 -0.144
GaP Gallium monophosphide rPGa 2.240 2.106 -0.134
GaP Gallium monophosphide rPGa 2.240 2.106 -0.134
GaP Gallium monophosphide rPGa 2.240 2.106 -0.134
GaP Gallium monophosphide rPGa 2.240 2.106 -0.134
N2 Nitrogen diatomic rNN 1.098 1.222 0.124
N2 Nitrogen diatomic rNN 1.098 1.222 0.124
FSN Thiazyl fluoride rFS 1.643 1.757 0.114
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.710 0.107
N2 Nitrogen diatomic rNN 1.213 1.114 -0.099
N2 Nitrogen diatomic rNN 1.213 1.114 -0.099
N2 Nitrogen diatomic rNN 1.213 1.114 -0.099
N2 Nitrogen diatomic rNN 1.213 1.114 -0.099
Si2H2 disilyne rSiSi 2.215 2.121 -0.095
ClOOCl Dichlorine dioxide rOCl 1.704 1.795 0.090
ClF3 Chlorine trifluoride rFCl 1.697 1.783 0.087
ClF3 Chlorine trifluoride rFCl 1.697 1.783 0.087
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.792 0.079
OClO Chlorine dioxide rClO 1.470 1.547 0.077
Si2H2 disilyne rSiSi 2.215 2.141 -0.075
ClOOCl Dichlorine dioxide rOO 1.426 1.352 -0.074
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
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.607 0.068
SiBr Silicon monobromide rSiBr 2.209 2.277 0.068
Si2H2 disilyne rSiH 1.668 1.735 0.067
OPCl Phosphorus oxychloride rPCl 2.059 2.126 0.067
C4H8O2 Ethyl acetate rCO 1.448 1.515 0.067
SiF3 Silicon trifluoride radical rFSi 1.565 1.630 0.065
PF2 Phosphorus difluoride rPF 1.579 1.644 0.065
SiF silicon monofluoride rSiF 1.604 1.669 0.065
SiF2 Silicon difluoride rFSi 1.590 1.655 0.064
SF4 Sulfur tetrafluoride rSF 1.545 1.608 0.063
ClF3 Chlorine trifluoride rFCl 1.697 1.760 0.063
ClF3 Chlorine trifluoride rFCl 1.697 1.760 0.063
C2H6O2S Dimethyl sulfone rSO 1.431 1.494 0.063
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 2.130 0.063
SO2 Sulfur dioxide rSO 1.432 1.495 0.063
SSO Disulfur monoxide rSO 1.456 1.518 0.062
GaBr Gallium monobromide rGaBr 2.352 2.414 0.062
SiF+ silicon monofluoride cation rFSi 1.527 1.588 0.061
SF2 sulfur difluoride rSF 1.587 1.648 0.061
SiCl Clorosilylidyne rSiCl 2.061 2.122 0.060
SiH2F2 difluorosilane rSiF 1.576 1.636 0.060
SF4 Sulfur tetrafluoride rSF 1.646 1.706 0.060
SiH3F monofluorosilane rSiF 1.595 1.654 0.059
GaCl Gallium monochloride rClGa 2.202 2.261 0.059
SO3 Sulfur trioxide rSO 1.418 1.477 0.059
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.096 0.058
SSO Disulfur monoxide rSS 1.884 1.942 0.058
CH3SOCH3 Dimethyl sulfoxide rSO 1.485 1.543 0.058
SFCl Sulfur chloride fluoride rFS 1.606 1.663 0.057
SiHF3 trifluorosilane rSiF 1.563 1.619 0.056
ClF3 Chlorine trifluoride rFCl 1.597 1.653 0.056
ClF3 Chlorine trifluoride rFCl 1.597 1.653 0.056
SOF4 Sulfur tetrafluoride oxide rFS 1.596 1.652 0.056
GaAs Gallium arsenide rGaAs 2.530 2.586 0.056
ClOF3 Chlorine trifluoride oxide rOCl 1.405 1.461 0.056
Cl2+ chlorine diatomic cation rClCl 1.892 1.947 0.055
SO Sulfur monoxide rSO 1.481 1.536 0.055
SO Sulfur monoxide rSO 1.481 1.536 0.055
S2N2 Disulfur dinitride rNS 1.642 1.697 0.055
SF Monosulfur monofluoride rSF 1.599 1.654 0.054
AlNC Aluminum isocyanide rAlN 1.855 1.908 0.053
GeCl Germanium monochloride rClGe 2.164 2.217 0.053
SFCl Sulfur chloride fluoride rSCl 1.994 2.047 0.053
HOSH hydrogen thioperoxide rSO 1.662 1.715 0.053
PF5 Phosphorus pentafluoride rPF 1.534 1.587 0.053
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
SF6 Sulfur Hexafluoride rSF 1.561 1.612 0.052
SCl sulfur monochloride rSCl 1.975 2.027 0.052
CH3CHNOH Acetaldoxime rCC 1.550 1.499 -0.051
SiBr+ Silicon monobromide cation rSiBr 2.095 2.147 0.051
GaAs Gallium arsenide rGaAs 2.530 2.581 0.051
PO Phosphorus monoxide rPO 1.476 1.527 0.051
136 molecules.