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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 wB97X-D/TZVP

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.194 3.109
C4H6 1-Methylcyclopropene rCH 1.087 3.411 2.324
H2SO4 Sulfuric acid rOH 0.970 2.862 1.892
C4H8S Thiophene, tetrahydro- rCC 1.532 3.295 1.763
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.421 1.304
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
H2ONH3 Water Ammonia Dimer rNH 2.983 2.053 -0.930
C4H6 1-Methylcyclopropene rCC 1.476 2.255 0.779
C4H6 1-Methylcyclopropene rCH 1.087 1.826 0.739
CH3CH2SH ethanethiol rCH 1.095 1.833 0.738
CH3CH2SH ethanethiol rCH 1.095 1.833 0.738
CH3CH2SH ethanethiol rCH 1.095 1.830 0.735
HSSSH trisulfane rHS 1.344 2.075 0.732
HSSSH trisulfane rHS 1.344 2.075 0.732
S4 Sulfur tetramer rSS 2.155 2.886 0.731
HSSSH trisulfane rHS 1.344 2.075 0.731
HSSSH trisulfane rHS 1.344 2.075 0.731
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.171 0.725
C4H8S Thiophene, tetrahydro- rCH 1.117 1.837 0.720
Na2Cl2 Disodium dichloride rNaCl 2.584 3.279 0.695
C4H6 1-Methylcyclopropene rCH 1.098 1.776 0.678
C4H6 1-Methylcyclopropene rCH 1.098 1.758 0.660
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
ONNO NO dimer rNN 2.236 1.743 -0.493
Li2 Lithium diatomic rLiLi 2.673 3.159 0.486
CH3SO2NH2 methanesulfonamide rCN 1.207 1.684 0.477
C4H4N2 Succinonitrile rCC 1.561 1.091 -0.470
C4H10O Methyl propyl ether rCC 1.530 1.093 -0.437
C4H6 1-Methylcyclopropene rCH 1.070 1.506 0.436
CH3CH2SH ethanethiol rCH 1.089 1.521 0.432
CH3CH2SH ethanethiol rCH 1.089 1.521 0.432
CH3CH2SH ethanethiol rCH 1.089 1.519 0.430
CH3CH2SH ethanethiol rCH 1.092 1.521 0.429
CH3CH2SH ethanethiol rCH 1.092 1.521 0.429
CH3CH2SH ethanethiol rCH 1.092 1.519 0.427
C2H4F2 1,2-difluoroethane rCH 1.093 1.519 0.426
C4H6 1-Methylcyclopropene rCC 1.515 1.090 -0.425
C2H4F2 1,2-difluoroethane rCH 1.093 1.516 0.423
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.468 0.420
C4H4N2 Succinonitrile rCH 1.123 1.542 0.419
C2H4F2 1,2-difluoroethane rCH 1.093 1.507 0.414
C2H4F2 1,2-difluoroethane rCH 1.093 1.503 0.410
S4 Sulfur tetramer rSS 2.155 2.521 0.366
CH2CHCH2F Allyl Fluoride rHC 1.130 1.493 0.363
CH2CHCH2F Allyl Fluoride rHC 1.130 1.492 0.362
GaP Gallium monophosphide rPGa 2.450 2.095 -0.355
GaP Gallium monophosphide rPGa 2.450 2.095 -0.355
GaP Gallium monophosphide rPGa 2.450 2.095 -0.355
GaP Gallium monophosphide rPGa 2.450 2.095 -0.355
Ar2 Argon diatomic rArAr 3.758 4.111 0.353
C4H4N2 Succinonitrile rCH 1.111 1.459 0.347
C3H3NO Isoxazole rCH 1.075 1.419 0.344
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.664 0.324
C4H8S Thiophene, tetrahydro- rCS 1.835 2.158 0.323
CaO Calcium monoxide rOCa 1.822 2.137 0.315
CaF Calcium monofluoride rFCa 1.967 2.280 0.313
AlP Aluminum monophosphide rAlP 2.400 2.088 -0.312
AlP Aluminum monophosphide rAlP 2.400 2.088 -0.312
AlP Aluminum monophosphide rAlP 2.400 2.088 -0.312
CH3CH2SH ethanethiol rCC 1.528 1.833 0.305
CH3CH2SH ethanethiol rCC 1.528 1.833 0.305
C4H10O Methyl propyl ether rCH 1.099 1.402 0.303
CH3CH2SH ethanethiol rCC 1.528 1.830 0.302
CH3CH2SH ethanethiol rCS 1.820 1.519 -0.301
CH3CH2SH ethanethiol rCS 1.820 1.521 -0.299
CH3CH2SH ethanethiol rCS 1.820 1.521 -0.299
SeO3 selenium trioxide rSeO 1.688 1.983 0.295
CaO Calcium monoxide rOCa 1.822 2.112 0.290
AlCl Aluminum monochloride rAlCl 2.130 2.420 0.289
Si2H2 disilyne rSiSi 2.215 1.958 -0.258
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.288 0.248
C2H2+ acetylene cation rCH 1.077 1.320 0.244
ZnS Zinc sulfide rSZn 2.046 2.283 0.237
B2 Boron diatomic rBB 1.590 1.355 -0.235
S4 Sulfur tetramer rSS 1.898 2.133 0.235
CaS Calcium sulfide rSCa 2.318 2.546 0.229
B2F4 Diboron tetrafluoride rBB 1.720 1.501 -0.219
Ar2+ Argon diatomic cation rArAr 2.320 2.535 0.215
CaCl calcium monochloride rClCa 2.437 2.651 0.215
AsF5 Arsenic pentafluoride rAsF 1.711 1.921 0.210
Si2H2 disilyne rSiH 1.668 1.460 -0.208
C4H6 1-Methylcyclopropene rCC 1.300 1.507 0.207
GaP Gallium monophosphide rPGa 2.450 2.254 -0.196
GaP Gallium monophosphide rPGa 2.450 2.254 -0.196
GaP Gallium monophosphide rPGa 2.450 2.254 -0.196
GaP Gallium monophosphide rPGa 2.450 2.254 -0.196
Si2 Silicon diatomic rSiSi 2.246 2.051 -0.195
NaO sodium monoxide rONa 2.052 1.862 -0.190
CaBr Calcium monobromide rCaBr 2.594 2.781 0.187
CaC Calcium monocarbide rCCa 2.302 2.487 0.186
Al2 Aluminum diatomic rAlAl 2.701 2.516 -0.185
S3 Sulfur trimer rSS 1.917 2.101 0.184
AsF5 Arsenic pentafluoride rAsF 1.656 1.835 0.179
SiP Silicon monophosphide rSiP 2.078 1.899 -0.179
AlP Aluminum monophosphide rAlP 2.400 2.223 -0.177
AlP Aluminum monophosphide rAlP 2.400 2.223 -0.177
AlP Aluminum monophosphide rAlP 2.400 2.223 -0.177
ClF5 chlorinepentafluoride rFCl 1.650 1.827 0.177
CaOH Calcium monohydroxide rOCa 1.976 2.153 0.177
Si2H2 disilyne rSiH 1.668 1.493 -0.175
Li2+ lithium diatomic cation rLiLi 3.112 2.937 -0.175
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.533 0.174
AlP Aluminum monophosphide rAlP 2.260 2.088 -0.172
AlP Aluminum monophosphide rAlP 2.260 2.088 -0.172
AlP Aluminum monophosphide rAlP 2.260 2.088 -0.172
C4H4N2O2 Uracil rNH 0.836 1.006 0.170
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.636 -0.168
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.636 -0.168
CaH Calcium monohydride rCaH 2.003 2.166 0.164
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
B2 Boron diatomic rBB 1.590 1.434 -0.156
B2Cl4 Diboron tetrachloride rBB 1.702 1.546 -0.156
ClF3 Chlorine trifluoride rFCl 1.597 1.752 0.155
ClF3 Chlorine trifluoride rFCl 1.597 1.752 0.155
GaP Gallium monophosphide rPGa 2.250 2.095 -0.155
GaP Gallium monophosphide rPGa 2.250 2.095 -0.155
GaP Gallium monophosphide rPGa 2.250 2.095 -0.155
GaP Gallium monophosphide rPGa 2.250 2.095 -0.155
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.088 -0.152
ArH+ Argon hydride cation rArH 1.292 1.441 0.149
C4H4N2O2 Uracil rCH 0.931 1.078 0.147
GaP Gallium monophosphide rPGa 2.240 2.095 -0.145
GaP Gallium monophosphide rPGa 2.240 2.095 -0.145
GaP Gallium monophosphide rPGa 2.240 2.095 -0.145
GaP Gallium monophosphide rPGa 2.240 2.095 -0.145
C10H8 Azulene rCC 1.414 1.558 0.144
GaP Gallium monophosphide rPGa 2.110 2.254 0.144
GaP Gallium monophosphide rPGa 2.110 2.254 0.144
GaP Gallium monophosphide rPGa 2.110 2.254 0.144
GaP Gallium monophosphide rPGa 2.110 2.254 0.144
KCl Potassium Chloride rKCl 2.667 2.809 0.142
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
BH3NH3 borane ammonia rBH 1.206 1.068 -0.138
Si2H2 disilyne rSiSi 2.215 2.081 -0.135
KBr Potassium Bromide rKBr 2.821 2.955 0.134
C4H4N2O2 Uracil rNH 0.877 1.010 0.133
AlP Aluminum monophosphide rAlP 2.220 2.088 -0.132
AlP Aluminum monophosphide rAlP 2.220 2.088 -0.132
AlP Aluminum monophosphide rAlP 2.220 2.088 -0.132
ClOOCl Dichlorine dioxide rOCl 1.704 1.575 -0.129
HOCO+ Hydrocarboxyl cation rCO 1.209 1.337 0.128
C10H8 Azulene rCC 1.407 1.533 0.126
KF Potassium Fluoride rKF 2.171 2.297 0.125
C4H4N2O2 Uracil rCH 0.957 1.081 0.124
N2 Nitrogen diatomic rNN 1.213 1.089 -0.123
N2 Nitrogen diatomic rNN 1.213 1.089 -0.123
N2 Nitrogen diatomic rNN 1.213 1.089 -0.123
N2 Nitrogen diatomic rNN 1.213 1.089 -0.123
B2F4 Diboron tetrafluoride rBF 1.317 1.439 0.122
PF3 Phosphorus trifluoride rFP 1.561 1.681 0.120
C10H8 Azulene rCC 1.405 1.286 -0.119
CaBr2 Calcium dibromide rCaBr 2.616 2.735 0.119
Si2H2 disilyne rSiSi 2.215 2.099 -0.117
C10H8 Azulene rCC 1.398 1.283 -0.115
CF3 Trifluoromethyl radical rCF 1.318 1.431 0.113
NO3 Nitrogen trioxide rNO 1.238 1.348 0.111
Al2 Aluminum diatomic rAlAl 2.701 2.591 -0.110
NO3 Nitrogen trioxide rNO 1.238 1.346 0.108
C2F4 Tetrafluoroethylene rCF 1.319 1.426 0.107
C2H4O3 trioxolane124 rCN 1.303 1.407 0.104
Si2 Silicon diatomic rSiSi 2.246 2.144 -0.102
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.429 0.101
SiP Silicon monophosphide rSiP 2.078 1.977 -0.101
N2 Nitrogen diatomic rNN 1.098 1.198 0.101
N2 Nitrogen diatomic rNN 1.098 1.198 0.101
KH Potassium hydride rKH 2.243 2.343 0.100
K2 Potassium diatomic rKK 3.905 4.005 0.099
SeO3 selenium trioxide rSeO 1.688 1.589 -0.098
B2 Boron diatomic rBB 1.590 1.493 -0.097
NF3 Nitrogen trifluoride rNF 1.365 1.462 0.097
BH3NH3 borane ammonia rBN 1.645 1.550 -0.096
BC boron monocarbide rBC 1.491 1.397 -0.095
KOH Potassium hydroxide rOK 2.212 2.301 0.090
HCCl Chloromethylene rCCl 1.696 1.607 -0.089
C10H8 Azulene rCC 1.377 1.290 -0.087
S8 Octasulfur rSS 2.059 1.974 -0.085
FNO Nitrosyl fluoride rNF 1.512 1.429 -0.083
SiC silicon monocarbide rCSi 1.722 1.640 -0.082
AlN Aluminum nitride rNAl 1.786 1.705 -0.081
CHCl3 Chloroform rCCl 1.762 1.681 -0.081
Ne2 Neon diatomic rNeNe 3.100 3.019 -0.081
C3H3N3 1,3,5-Triazine rCN 1.338 1.418 0.080
ClFO3 Perchloryl fluoride rFCl 1.598 1.678 0.080
Al2 Aluminum diatomic rAlAl 2.701 2.622 -0.079
He2+ helium diatomic cation rHeHe 1.081 1.159 0.078
C3H4O Cyclopropanone rCO 1.191 1.269 0.078
SiC silicon monocarbide rCSi 1.722 1.645 -0.077
NO+ nitric oxide cation rNO 1.066 1.141 0.076
CF3CN Acetonitrile, trifluoro- rCC 1.492 1.418 -0.075
ScF Scandium monofluoride rFSc 1.788 1.862 0.075
LiK Lithium Potassium rLiK 3.270 3.343 0.073
C3H4O Cyclopropanone rCH 1.086 1.013 -0.073
Na2 Sodium diatomic rNaNa 3.079 3.151 0.072
GaCl3 Gallium trichloride rClGa 2.180 2.111 -0.069
H2Cl+ dihydrogen monochloride cation rHCl 1.321 1.389 0.068
BN boron nitride rBN 1.325 1.260 -0.065
ClOOCl Dichlorine dioxide rOO 1.426 1.361 -0.065
BH3NH3 borane ammonia rNH 1.010 0.947 -0.063
PCl3 Phosphorus trichloride rPCl 2.043 1.980 -0.063
FSSF Difluorodisulfane rSS 1.890 1.953 0.063
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.518 -0.062
HOCO+ Hydrocarboxyl cation rCO 1.140 1.202 0.062
C4H8O2 Ethyl acetate rCO 1.448 1.510 0.062
GaCl3 Gallium trichloride rClGa 2.180 2.119 -0.061
NaLi lithium sodium rLiNa 2.889 2.950 0.061
HNO2 Nitrous acid rNO 1.442 1.381 -0.061
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.662 0.059
CH3CHNOH Acetaldoxime rCC 1.550 1.491 -0.059
Si2H2 disilyne rSiH 1.668 1.726 0.058
CH3CHNOH Acetaldoxime rCC 1.550 1.493 -0.057
C2 Carbon diatomic rCC 1.243 1.299 0.057
BHCl2 Borane, dichloro- rBH 1.130 1.185 0.055
ClF3 Chlorine trifluoride rFCl 1.697 1.752 0.055
ClF3 Chlorine trifluoride rFCl 1.697 1.752 0.055
LiBr Lithium Bromide rLiBr 2.170 2.225 0.055
C3H3NO Isoxazole rCC 1.356 1.302 -0.054
LiCl lithium chloride rLiCl 2.021 2.075 0.054
NCl nitrogen monochloride rNCl 1.611 1.665 0.054
LiCl lithium chloride rLiCl 2.021 2.074 0.053
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.347 -0.053
C4H10O Ethoxy ethane rCO 1.411 1.464 0.053
C4H6 Methylenecyclopropane rCH 1.088 1.035 -0.053
FSN Thiazyl fluoride rFS 1.643 1.696 0.053
CH3CF3 Ethane, 1,1,1-trifluoro- rCH 1.081 1.028 -0.053
C5H10 2-Pentene, (E)- rCC 1.576 1.524 -0.052
N2O3 Dinitrogen trioxide rNN 1.864 1.812 -0.052
BrCN Cyanogen bromide rCBr 1.789 1.841 0.052
HCCl Chloromethylene rCH 1.119 1.067 -0.052
CH2O2 Dioxirane rOO 1.516 1.464 -0.051
FOO Dioxygen monofluoride radical rFO 1.649 1.598 -0.051
C2Cl2 dichloroacetylene rCC 1.246 1.195 -0.051
CFCl chlorofluoromethylene rCCl 1.714 1.764 0.050
C4H6 Methylenecyclopropane rCH 1.090 1.040 -0.050
C3H5 Allyl radical rCC 1.428 1.378 -0.050
C4H6 Methylenecyclopropane rCC 1.542 1.492 -0.050
236 molecules.