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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 B1B95/aug-cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.189 3.104
C4H6 1-Methylcyclopropene rCH 1.087 3.395 2.308
H2SO4 Sulfuric acid rOH 0.970 2.843 1.873
C5H8O Cyclopentanone rCH 1.095 2.786 1.691
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.409 1.292
C2H5NO3 Nitric acid, ethyl ester rCO 1.430 2.340 0.910
C5H8O Cyclopentanone rCC 1.557 2.436 0.879
C4H6 1-Methylcyclopropene rCC 1.476 2.245 0.769
C4H6 1-Methylcyclopropene rCH 1.087 1.819 0.732
CH3CH2SH ethanethiol rCH 1.095 1.820 0.725
CH3CH2SH ethanethiol rCH 1.095 1.817 0.722
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.160 0.714
HSSSH trisulfane rHS 1.344 2.055 0.712
HSSSH trisulfane rHS 1.344 2.055 0.712
HSSSH trisulfane rHS 1.344 2.054 0.711
HSSSH trisulfane rHS 1.344 2.054 0.711
S4 Sulfur tetramer rSS 2.155 2.832 0.677
C4H6 1-Methylcyclopropene rCH 1.098 1.770 0.672
C4H6 1-Methylcyclopropene rCH 1.098 1.750 0.652
CH3SO2NH2 methanesulfonamide rCN 1.207 1.662 0.455
ONNO NO dimer rNN 2.236 1.782 -0.454
Be2 Beryllium diatomic rBeBe 2.460 2.007 -0.453
C4H10O Methyl propyl ether rCC 1.530 1.089 -0.441
C4H6 1-Methylcyclopropene rCC 1.515 1.088 -0.427
C4H6 1-Methylcyclopropene rCH 1.070 1.497 0.427
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 1.509 0.416
C2H4F2 1,2-difluoroethane rCH 1.093 1.496 0.403
GaP Gallium monophosphide rPGa 2.450 2.082 -0.368
GaP Gallium monophosphide rPGa 2.450 2.082 -0.368
GaP Gallium monophosphide rPGa 2.450 2.082 -0.368
GaP Gallium monophosphide rPGa 2.450 2.082 -0.368
CH2CHCH2F Allyl Fluoride rHC 1.130 1.485 0.355
CH2CHCH2F Allyl Fluoride rHC 1.130 1.484 0.354
S4 Sulfur tetramer rSS 2.155 2.497 0.342
C3H3NO Isoxazole rCH 1.075 1.413 0.338
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.664 0.324
AlP Aluminum monophosphide rAlP 2.400 2.077 -0.323
AlP Aluminum monophosphide rAlP 2.400 2.077 -0.323
AlP Aluminum monophosphide rAlP 2.400 2.077 -0.323
Al2 Aluminum diatomic rAlAl 2.701 3.022 0.321
CH3CH2SH ethanethiol rCS 1.820 1.512 -0.308
CH3CH2SH ethanethiol rCS 1.820 1.514 -0.306
C4H10O Methyl propyl ether rCH 1.099 1.399 0.300
CH3CH2SH ethanethiol rCC 1.528 1.820 0.292
CH3CH2SH ethanethiol rCC 1.528 1.817 0.289
Ar2 Argon diatomic rArAr 3.758 4.039 0.281
Si2H2 disilyne rSiSi 2.215 1.962 -0.253
C5H8O Cyclopentanone rCC 1.504 1.756 0.252
C2H2+ acetylene cation rCH 1.077 1.313 0.236
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.270 0.230
GaP Gallium monophosphide rPGa 2.450 2.236 -0.214
GaP Gallium monophosphide rPGa 2.450 2.236 -0.214
GaP Gallium monophosphide rPGa 2.450 2.236 -0.214
GaP Gallium monophosphide rPGa 2.450 2.236 -0.214
Si2H2 disilyne rSiH 1.668 1.460 -0.208
S4 Sulfur tetramer rSS 1.898 2.104 0.206
C4H6 1-Methylcyclopropene rCC 1.300 1.496 0.196
Si2 Silicon diatomic rSiSi 2.246 2.052 -0.194
Mg2 Magnesium diatomic rMgMg 3.891 3.702 -0.189
AlP Aluminum monophosphide rAlP 2.400 2.214 -0.186
AlP Aluminum monophosphide rAlP 2.400 2.214 -0.186
AlP Aluminum monophosphide rAlP 2.400 2.214 -0.186
AlP Aluminum monophosphide rAlP 2.400 2.214 -0.186
AlP Aluminum monophosphide rAlP 2.400 2.214 -0.186
AlP Aluminum monophosphide rAlP 2.400 2.214 -0.186
AlP Aluminum monophosphide rAlP 2.260 2.077 -0.183
AlP Aluminum monophosphide rAlP 2.260 2.077 -0.183
AlP Aluminum monophosphide rAlP 2.260 2.077 -0.183
Ar2+ Argon diatomic cation rArAr 2.320 2.501 0.181
Si2H2 disilyne rSiH 1.668 1.491 -0.177
GaP Gallium monophosphide rPGa 2.250 2.082 -0.168
GaP Gallium monophosphide rPGa 2.250 2.082 -0.168
GaP Gallium monophosphide rPGa 2.250 2.082 -0.168
GaP Gallium monophosphide rPGa 2.250 2.082 -0.168
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.520 0.161
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.080 -0.160
GaP Gallium monophosphide rPGa 2.240 2.082 -0.158
GaP Gallium monophosphide rPGa 2.240 2.082 -0.158
GaP Gallium monophosphide rPGa 2.240 2.082 -0.158
GaP Gallium monophosphide rPGa 2.240 2.082 -0.158
S3 Sulfur trimer rSS 1.917 2.070 0.153
ArH+ Argon hydride cation rArH 1.292 1.441 0.149
AlP Aluminum monophosphide rAlP 2.220 2.077 -0.143
AlP Aluminum monophosphide rAlP 2.220 2.077 -0.143
AlP Aluminum monophosphide rAlP 2.220 2.077 -0.143
Si2H2 disilyne rSiSi 2.215 2.084 -0.131
ClF3 Chlorine trifluoride rFCl 1.597 1.727 0.130
ClF3 Chlorine trifluoride rFCl 1.597 1.727 0.130
C5H8O Cyclopentanone rCO 1.215 1.086 -0.129
GaP Gallium monophosphide rPGa 2.110 2.236 0.126
GaP Gallium monophosphide rPGa 2.110 2.236 0.126
GaP Gallium monophosphide rPGa 2.110 2.236 0.126
GaP Gallium monophosphide rPGa 2.110 2.236 0.126
N2 Nitrogen diatomic rNN 1.213 1.088 -0.125
N2 Nitrogen diatomic rNN 1.213 1.088 -0.125
N2 Nitrogen diatomic rNN 1.213 1.088 -0.125
N2 Nitrogen diatomic rNN 1.213 1.088 -0.125
N2 Nitrogen diatomic rNN 1.213 1.088 -0.125
N2 Nitrogen diatomic rNN 1.213 1.088 -0.125
Ne2 Neon diatomic rNeNe 3.100 2.977 -0.123
PF3 Phosphorus trifluoride rFP 1.561 1.673 0.112
Si2H2 disilyne rSiSi 2.215 2.104 -0.112
AlN Aluminum nitride rNAl 1.786 1.675 -0.111
SiP Silicon monophosphide rSiP 2.078 1.975 -0.103
SeO3 selenium trioxide rSeO 1.688 1.587 -0.101
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.428 0.100
N2 Nitrogen diatomic rNN 1.098 1.196 0.098
N2 Nitrogen diatomic rNN 1.098 1.196 0.098
NF3 Nitrogen trifluoride rNF 1.365 1.460 0.096
FNO Nitrosyl fluoride rNF 1.512 1.426 -0.086
CHCl3 Chloroform rCCl 1.762 1.681 -0.081
SiC silicon monocarbide rCSi 1.722 1.641 -0.081
SiC silicon monocarbide rCSi 1.722 1.642 -0.080
Be2 Beryllium diatomic rBeBe 2.460 2.540 0.080
B4H10 Tetraborane(10) rHB 1.484 1.405 -0.079
CF3CN Acetonitrile, trifluoro- rCC 1.492 1.414 -0.078
C3H4O Cyclopropanone rCO 1.191 1.269 0.078
BC boron monocarbide rBC 1.491 1.415 -0.076
B2 Boron diatomic rBB 1.590 1.515 -0.075
B2 Boron diatomic rBB 1.590 1.515 -0.075
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.506 -0.074
C3H4O Cyclopropanone rCH 1.086 1.013 -0.073
PCl3 Phosphorus trichloride rPCl 2.043 1.973 -0.070
GaCl3 Gallium trichloride rClGa 2.180 2.112 -0.068
GaCl3 Gallium trichloride rClGa 2.180 2.112 -0.068
CO Carbon monoxide rCO 1.128 1.196 0.068
S4 Sulfur tetramer rSS 2.155 2.090 -0.065
CH3CHNOH Acetaldoxime rCC 1.550 1.485 -0.065
CH3CHNOH Acetaldoxime rCC 1.550 1.485 -0.065
ClOOCl Dichlorine dioxide rOO 1.426 1.362 -0.064
BN boron nitride rBN 1.325 1.262 -0.063
NaLi lithium sodium rLiNa 2.889 2.952 0.063
BN boron nitride rBN 1.325 1.264 -0.061
He2+ helium diatomic cation rHeHe 1.081 1.141 0.060
B4H10 Tetraborane(10) rHB 1.315 1.256 -0.059
C2 Carbon diatomic rCC 1.243 1.301 0.059
C2 Carbon diatomic rCC 1.243 1.301 0.059
ClFO3 Perchloryl fluoride rFCl 1.598 1.655 0.057
C3H3NO Isoxazole rCC 1.356 1.299 -0.057
H2O2 Hydrogen peroxide rOO 1.475 1.420 -0.055
C4H8O2 Ethyl acetate rCO 1.448 1.503 0.055
C5H6 Bicyclo[2.1.0]pent-2-ene rCC 1.560 1.505 -0.055
CH3CF3 Ethane, 1,1,1-trifluoro- rCH 1.081 1.027 -0.054
C4H6 Methylenecyclopropane rCH 1.088 1.034 -0.054
C3H5 Allyl radical rCC 1.428 1.375 -0.053
C3H5 Allyl radical rCC 1.428 1.375 -0.053
B2 Boron diatomic rBB 1.590 1.642 0.052
HCF Fluoromethylene rCH 1.138 1.086 -0.052
CH2O2 Dioxirane rOO 1.516 1.464 -0.052
B2 Boron diatomic rBB 1.590 1.642 0.052
C4H6 Methylenecyclopropane rCH 1.090 1.039 -0.051
CH3ONO Methyl nitrite rNO 1.398 1.347 -0.051
Ne2+ Neon diatomic cation rNeNe 1.765 1.815 0.050
157 molecules.