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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/cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.190 3.105
C4H6 1-Methylcyclopropene rCH 1.087 3.408 2.321
H2SO4 Sulfuric acid rOH 0.970 2.843 1.873
C4H8S Thiophene, tetrahydro- rCC 1.532 3.290 1.758
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.417 1.300
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
H2ONH3 Water Ammonia Dimer rNH 2.983 2.058 -0.925
C4H6 1-Methylcyclopropene rCC 1.476 2.252 0.776
C4H6 1-Methylcyclopropene rCH 1.087 1.824 0.737
CH3CH2SH ethanethiol rCH 1.095 1.826 0.731
CH3CH2SH ethanethiol rCH 1.095 1.824 0.729
CH3CH2SH ethanethiol rCH 1.095 1.822 0.727
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.168 0.722
HSSSH trisulfane rHS 1.344 2.062 0.719
HSSSH trisulfane rHS 1.344 2.062 0.719
HSSSH trisulfane rHS 1.344 2.062 0.719
HSSSH trisulfane rHS 1.344 2.062 0.719
C4H8S Thiophene, tetrahydro- rCH 1.117 1.830 0.713
S4 Sulfur tetramer rSS 2.155 2.858 0.703
C4H6 1-Methylcyclopropene rCH 1.098 1.773 0.675
Na2Cl2 Disodium dichloride rNaCl 2.584 3.244 0.660
C4H6 1-Methylcyclopropene rCH 1.098 1.755 0.657
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 1.744 -0.492
Li2 Lithium diatomic rLiLi 2.673 3.159 0.486
C4H4N2 Succinonitrile rCC 1.561 1.089 -0.472
CH3SO2NH2 methanesulfonamide rCN 1.207 1.666 0.459
C4H10O Methyl propyl ether rCC 1.530 1.091 -0.439
C4H6 1-Methylcyclopropene rCH 1.070 1.504 0.434
CH3CH2SH ethanethiol rCH 1.089 1.520 0.431
CH3CH2SH ethanethiol rCH 1.089 1.519 0.430
CH3CH2SH ethanethiol rCH 1.089 1.518 0.429
CH3CH2SH ethanethiol rCH 1.092 1.520 0.428
CH3CH2SH ethanethiol rCH 1.092 1.519 0.427
CH3CH2SH ethanethiol rCH 1.092 1.518 0.426
C4H6 1-Methylcyclopropene rCC 1.515 1.089 -0.426
C2H4F2 1,2-difluoroethane rCH 1.093 1.516 0.423
C2H4F2 1,2-difluoroethane rCH 1.093 1.515 0.422
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.466 0.418
C4H4N2 Succinonitrile rCH 1.123 1.540 0.418
C2H4F2 1,2-difluoroethane rCH 1.093 1.505 0.412
C2H4F2 1,2-difluoroethane rCH 1.093 1.502 0.409
CH2CHCH2F Allyl Fluoride rHC 1.130 1.492 0.362
CH2CHCH2F Allyl Fluoride rHC 1.130 1.491 0.361
GaP Gallium monophosphide rPGa 2.450 2.091 -0.359
GaP Gallium monophosphide rPGa 2.450 2.091 -0.359
GaP Gallium monophosphide rPGa 2.450 2.091 -0.359
GaP Gallium monophosphide rPGa 2.450 2.091 -0.359
Ar2 Argon diatomic rArAr 3.758 4.112 0.354
C4H4N2 Succinonitrile rCH 1.111 1.458 0.347
C3H3NO Isoxazole rCH 1.075 1.417 0.342
S4 Sulfur tetramer rSS 2.155 2.481 0.326
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.664 0.324
C4H8S Thiophene, tetrahydro- rCS 1.835 2.155 0.320
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 rCS 1.820 1.518 -0.302
CH3CH2SH ethanethiol rCS 1.820 1.519 -0.301
C4H10O Methyl propyl ether rCH 1.099 1.399 0.300
CH3CH2SH ethanethiol rCS 1.820 1.520 -0.300
CH3CH2SH ethanethiol rCC 1.528 1.826 0.298
SeO3 selenium trioxide rSeO 1.688 1.985 0.297
CH3CH2SH ethanethiol rCC 1.528 1.824 0.296
CH3CH2SH ethanethiol rCC 1.528 1.822 0.294
AlCl Aluminum monochloride rAlCl 2.130 2.420 0.289
CaC Calcium monocarbide rCCa 2.302 2.022 -0.279
Si2H2 disilyne rSiSi 2.215 1.955 -0.260
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.287 0.247
C2H2+ acetylene cation rCH 1.077 1.320 0.244
B2 Boron diatomic rBB 1.590 1.351 -0.239
B2F4 Diboron tetrafluoride rBB 1.720 1.500 -0.220
ZnS Zinc sulfide rSZn 2.046 2.265 0.219
S4 Sulfur tetramer rSS 1.898 2.113 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 1.505 0.205
GaP Gallium monophosphide rPGa 2.450 2.248 -0.202
GaP Gallium monophosphide rPGa 2.450 2.248 -0.202
GaP Gallium monophosphide rPGa 2.450 2.248 -0.202
GaP Gallium monophosphide rPGa 2.450 2.248 -0.202
Si2 Silicon diatomic rSiSi 2.246 2.048 -0.198
NaO sodium monoxide rONa 2.052 1.859 -0.193
SiP Silicon monophosphide rSiP 2.078 1.895 -0.183
Al2 Aluminum diatomic rAlAl 2.701 2.522 -0.179
AlP Aluminum monophosphide rAlP 2.400 2.221 -0.179
AlP Aluminum monophosphide rAlP 2.400 2.221 -0.179
AlP Aluminum monophosphide rAlP 2.400 2.221 -0.179
AsF5 Arsenic pentafluoride rAsF 1.656 1.835 0.179
Si2H2 disilyne rSiH 1.668 1.490 -0.178
ClF5 chlorinepentafluoride rFCl 1.650 1.826 0.176
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
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.528 0.169
C4H4N2O2 Uracil rNH 0.836 1.004 0.168
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.636 -0.168
Ar2+ Argon diatomic cation rArAr 2.320 2.488 0.168
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.636 -0.168
S3 Sulfur trimer rSS 1.917 2.085 0.168
Li2+ lithium diatomic cation rLiLi 3.112 2.950 -0.162
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
GaP Gallium monophosphide rPGa 2.250 2.091 -0.159
GaP Gallium monophosphide rPGa 2.250 2.091 -0.159
GaP Gallium monophosphide rPGa 2.250 2.091 -0.159
GaP Gallium monophosphide rPGa 2.250 2.091 -0.159
B2 Boron diatomic rBB 1.590 1.431 -0.159
B2Cl4 Diboron tetrachloride rBB 1.702 1.548 -0.154
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.086 -0.154
ArH+ Argon hydride cation rArH 1.292 1.441 0.149
GaP Gallium monophosphide rPGa 2.240 2.091 -0.149
GaP Gallium monophosphide rPGa 2.240 2.091 -0.149
GaP Gallium monophosphide rPGa 2.240 2.091 -0.149
GaP Gallium monophosphide rPGa 2.240 2.091 -0.149
C4H4N2O2 Uracil rCH 0.931 1.076 0.145
C10H8 Azulene rCC 1.414 1.557 0.142
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
GaP Gallium monophosphide rPGa 2.110 2.248 0.138
GaP Gallium monophosphide rPGa 2.110 2.248 0.138
GaP Gallium monophosphide rPGa 2.110 2.248 0.138
GaP Gallium monophosphide rPGa 2.110 2.248 0.138
BH3NH3 borane ammonia rBH 1.206 1.068 -0.138
Si2H2 disilyne rSiSi 2.215 2.078 -0.137
ClOOCl Dichlorine dioxide rOCl 1.704 1.572 -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
C4H4N2O2 Uracil rNH 0.877 1.008 0.131
ClF3 Chlorine trifluoride rFCl 1.597 1.725 0.129
ClF3 Chlorine trifluoride rFCl 1.597 1.725 0.129
HOCO+ Hydrocarboxyl cation rCO 1.209 1.336 0.128
N2 Nitrogen diatomic rNN 1.213 1.086 -0.126
N2 Nitrogen diatomic rNN 1.213 1.086 -0.126
C10H8 Azulene rCC 1.407 1.532 0.125
N2 Nitrogen diatomic rNN 1.213 1.088 -0.124
N2 Nitrogen diatomic rNN 1.213 1.088 -0.124
C4H4N2O2 Uracil rCH 0.957 1.080 0.123
B2F4 Diboron tetrafluoride rBF 1.317 1.439 0.122
Si2H2 disilyne rSiSi 2.215 2.094 -0.121
C10H8 Azulene rCC 1.405 1.285 -0.120
C10H8 Azulene rCC 1.398 1.283 -0.115
PF3 Phosphorus trifluoride rFP 1.561 1.674 0.113
CF3 Trifluoromethyl radical rCF 1.318 1.431 0.113
Al2 Aluminum diatomic rAlAl 2.701 2.591 -0.110
C2F4 Tetrafluoroethylene rCF 1.319 1.426 0.107
NO3 Nitrogen trioxide rNO 1.238 1.344 0.106
SiP Silicon monophosphide rSiP 2.078 1.972 -0.105
SeO3 selenium trioxide rSeO 1.688 1.582 -0.105
Si2 Silicon diatomic rSiSi 2.246 2.142 -0.104
NO3 Nitrogen trioxide rNO 1.238 1.342 0.104
TiCl Titanium Monochloride rClTi 2.265 2.367 0.103
C2H4O3 trioxolane124 rCN 1.303 1.406 0.103
N2 Nitrogen diatomic rNN 1.098 1.199 0.101
N2 Nitrogen diatomic rNN 1.098 1.199 0.101
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.428 0.100
B2 Boron diatomic rBB 1.590 1.491 -0.099
HCCl Chloromethylene rCCl 1.696 1.598 -0.099
BH3NH3 borane ammonia rBN 1.645 1.549 -0.096
Ne2 Neon diatomic rNeNe 3.100 3.005 -0.095
BC boron monocarbide rBC 1.491 1.396 -0.095
NF3 Nitrogen trifluoride rNF 1.365 1.460 0.095
S8 Octasulfur rSS 2.059 1.971 -0.088
C10H8 Azulene rCC 1.377 1.290 -0.088
S4 Sulfur tetramer rSS 2.155 2.068 -0.087
FNO Nitrosyl fluoride rNF 1.512 1.426 -0.086
SiC silicon monocarbide rCSi 1.722 1.637 -0.085
AlN Aluminum nitride rNAl 1.786 1.702 -0.085
CHCl3 Chloroform rCCl 1.762 1.681 -0.081
SiC silicon monocarbide rCSi 1.722 1.642 -0.080
C3H3N3 1,3,5-Triazine rCN 1.338 1.418 0.080
He2+ helium diatomic cation rHeHe 1.081 1.159 0.078
C3H4O Cyclopropanone rCO 1.191 1.269 0.078
NO+ nitric oxide cation rNO 1.066 1.141 0.076
CF3CN Acetonitrile, trifluoro- rCC 1.492 1.417 -0.075
Al2 Aluminum diatomic rAlAl 2.701 2.626 -0.075
C3H4O Cyclopropanone rCH 1.086 1.013 -0.073
GaCl3 Gallium trichloride rClGa 2.180 2.108 -0.072
H2Cl+ dihydrogen monochloride cation rHCl 1.321 1.388 0.068
PCl3 Phosphorus trichloride rPCl 2.043 1.975 -0.068
GaCl3 Gallium trichloride rClGa 2.180 2.114 -0.067
BN boron nitride rBN 1.325 1.260 -0.065
CH2ClCHCl2 1,1,2-trichloroethane rCC 1.580 1.516 -0.064
BH3NH3 borane ammonia rNH 1.010 0.947 -0.064
HOCO+ Hydrocarboxyl cation rCO 1.140 1.203 0.063
HNO2 Nitrous acid rNO 1.442 1.380 -0.062
ClOOCl Dichlorine dioxide rOO 1.426 1.364 -0.062
C4H8O2 Ethyl acetate rCO 1.448 1.509 0.061
FOO Dioxygen monofluoride radical rFO 1.649 1.588 -0.061
LiCl- lithium chloride anion rLiCl 2.180 2.119 -0.061
ScF Scandium monofluoride rFSc 1.788 1.848 0.060
CH3CHNOH Acetaldoxime rCC 1.550 1.490 -0.060
N2O3 Dinitrogen trioxide rNN 1.864 1.806 -0.058
CH2SHCH2SH 1,2-Ethanedithiol rSH 1.400 1.342 -0.058
CH3CHNOH Acetaldoxime rCC 1.550 1.492 -0.058
C2 Carbon diatomic rCC 1.243 1.300 0.058
Na2 Sodium diatomic rNaNa 3.079 3.136 0.057
ClFO3 Perchloryl fluoride rFCl 1.598 1.654 0.056
H2O2 Hydrogen peroxide rOO 1.475 1.419 -0.056
C3H3NO Isoxazole rCC 1.356 1.301 -0.055
NaLi lithium sodium rLiNa 2.889 2.943 0.054
HCCl Chloromethylene rCH 1.119 1.065 -0.054
C5H10 2-Pentene, (E)- rCC 1.576 1.522 -0.054
CH3CF3 Ethane, 1,1,1-trifluoro- rCH 1.081 1.027 -0.054
CH2O2 Dioxirane rOO 1.516 1.462 -0.054
S3 Sulfur trimer rSS 1.917 1.863 -0.054
C4H6 Methylenecyclopropane rCH 1.088 1.035 -0.053
BHCl2 Borane, dichloro- rBH 1.130 1.183 0.053
N2O4 Dinitrogen tetroxide rNN 1.782 1.729 -0.053
BrCN Cyanogen bromide rCBr 1.789 1.841 0.052
C3H5 Allyl radical rCC 1.428 1.376 -0.052
C2Cl2 dichloroacetylene rCC 1.246 1.195 -0.051
C4H6 Methylenecyclopropane rCH 1.090 1.039 -0.051
C4H10O Ethoxy ethane rCO 1.411 1.462 0.051
FSSF Difluorodisulfane rSS 1.890 1.940 0.050
216 molecules.