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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 TPSSh/TZVP

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.210 3.125
C4H6 1-Methylcyclopropene rCH 1.087 3.418 2.331
C4H6 1-Methylcyclopropene rCC 1.476 2.257 0.781
CH3CH2SH ethanethiol rCH 1.095 1.848 0.753
CH3CH2SH ethanethiol rCH 1.095 1.844 0.749
HSSSH trisulfane rHS 1.344 2.093 0.749
HSSSH trisulfane rHS 1.344 2.093 0.749
C4H6 1-Methylcyclopropene rCH 1.087 1.828 0.741
S4 Sulfur tetramer rSS 2.155 2.894 0.739
C4H6 1-Methylcyclopropene rCH 1.098 1.779 0.681
C4H6 1-Methylcyclopropene rCH 1.098 1.760 0.662
CH3SO2NH2 methanesulfonamide rCN 1.207 1.708 0.501
Be2 Beryllium diatomic rBeBe 2.460 2.021 -0.439
C4H6 1-Methylcyclopropene rCH 1.070 1.508 0.438
S4 Sulfur tetramer rSS 2.155 2.591 0.436
C4H10O Methyl propyl ether rCC 1.530 1.094 -0.436
CH3CH2SH ethanethiol rCH 1.089 1.524 0.435
CH3CH2SH ethanethiol rCH 1.089 1.523 0.434
CH3CH2SH ethanethiol rCH 1.092 1.524 0.432
CH3CH2SH ethanethiol rCH 1.092 1.523 0.431
C2H4F2 1,2-difluoroethane rCH 1.093 1.520 0.427
C4H6 1-Methylcyclopropene rCC 1.515 1.092 -0.423
C2H4F2 1,2-difluoroethane rCH 1.093 1.506 0.413
CH2CHCH2F Allyl Fluoride rHC 1.130 1.495 0.365
GaP Gallium monophosphide rPGa 2.450 2.086 -0.364
GaP Gallium monophosphide rPGa 2.450 2.086 -0.364
GaP Gallium monophosphide rPGa 2.450 2.086 -0.364
GaP Gallium monophosphide rPGa 2.450 2.086 -0.364
CH2CHCH2F Allyl Fluoride rHC 1.130 1.492 0.362
C3H3NO Isoxazole rCH 1.075 1.420 0.345
ONNO NO dimer rNN 2.236 1.912 -0.324
CH3CH2SH ethanethiol rCC 1.528 1.848 0.320
C4H10O Methyl propyl ether rCH 1.099 1.416 0.317
CH3CH2SH ethanethiol rCC 1.528 1.844 0.316
AlP Aluminum monophosphide rAlP 2.400 2.085 -0.315
AlP Aluminum monophosphide rAlP 2.400 2.085 -0.315
AlP Aluminum monophosphide rAlP 2.400 2.085 -0.315
CaO Calcium monoxide rOCa 1.822 2.121 0.299
Ar2 Argon diatomic rArAr 3.758 4.057 0.299
CH3CH2SH ethanethiol rCS 1.820 1.523 -0.297
CH3CH2SH ethanethiol rCS 1.820 1.524 -0.296
Ar2+ Argon diatomic cation rArAr 2.320 2.597 0.277
CaC Calcium monocarbide rCCa 2.302 2.553 0.251
S4 Sulfur tetramer rSS 1.898 2.148 0.250
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.288 0.248
CaS Calcium sulfide rSCa 2.318 2.565 0.247
C2H2+ acetylene cation rCH 1.077 1.320 0.243
Si2H2 disilyne rSiSi 2.215 1.973 -0.242
GaP Gallium monophosphide rPGa 2.450 2.241 -0.209
GaP Gallium monophosphide rPGa 2.450 2.241 -0.209
GaP Gallium monophosphide rPGa 2.450 2.241 -0.209
GaP Gallium monophosphide rPGa 2.450 2.241 -0.209
C4H6 1-Methylcyclopropene rCC 1.300 1.507 0.207
Si2H2 disilyne rSiH 1.668 1.463 -0.205
CaBr Calcium monobromide rCaBr 2.594 2.788 0.194
S3 Sulfur trimer rSS 1.917 2.107 0.190
ClF3 Chlorine trifluoride rFCl 1.597 1.781 0.185
ClF3 Chlorine trifluoride rFCl 1.597 1.781 0.185
AlP Aluminum monophosphide rAlP 2.400 2.220 -0.180
AlP Aluminum monophosphide rAlP 2.400 2.220 -0.180
AlP Aluminum monophosphide rAlP 2.400 2.220 -0.180
AlP Aluminum monophosphide rAlP 2.400 2.220 -0.180
AlP Aluminum monophosphide rAlP 2.400 2.220 -0.180
AlP Aluminum monophosphide rAlP 2.400 2.220 -0.180
AlP Aluminum monophosphide rAlP 2.260 2.085 -0.175
AlP Aluminum monophosphide rAlP 2.260 2.085 -0.175
AlP Aluminum monophosphide rAlP 2.260 2.085 -0.175
Si2H2 disilyne rSiH 1.668 1.494 -0.174
GaP Gallium monophosphide rPGa 2.250 2.086 -0.164
GaP Gallium monophosphide rPGa 2.250 2.086 -0.164
GaP Gallium monophosphide rPGa 2.250 2.086 -0.164
GaP Gallium monophosphide rPGa 2.250 2.086 -0.164
GaP Gallium monophosphide rPGa 2.240 2.086 -0.154
GaP Gallium monophosphide rPGa 2.240 2.086 -0.154
GaP Gallium monophosphide rPGa 2.240 2.086 -0.154
GaP Gallium monophosphide rPGa 2.240 2.086 -0.154
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.092 -0.148
ClOOCl Dichlorine dioxide rOCl 1.704 1.843 0.139
AlP Aluminum monophosphide rAlP 2.220 2.085 -0.135
AlP Aluminum monophosphide rAlP 2.220 2.085 -0.135
AlP Aluminum monophosphide rAlP 2.220 2.085 -0.135
GaP Gallium monophosphide rPGa 2.110 2.241 0.131
GaP Gallium monophosphide rPGa 2.110 2.241 0.131
GaP Gallium monophosphide rPGa 2.110 2.241 0.131
GaP Gallium monophosphide rPGa 2.110 2.241 0.131
Ne2+ Neon diatomic cation rNeNe 1.765 1.893 0.128
Mg2 Magnesium diatomic rMgMg 3.891 3.763 -0.128
CaBr2 Calcium dibromide rCaBr 2.616 2.741 0.125
ClOOCl Dichlorine dioxide rOO 1.426 1.305 -0.121
Be2 Beryllium diatomic rBeBe 2.460 2.342 -0.118
N2 Nitrogen diatomic rNN 1.213 1.097 -0.116
N2 Nitrogen diatomic rNN 1.213 1.097 -0.116
N2 Nitrogen diatomic rNN 1.213 1.097 -0.116
N2 Nitrogen diatomic rNN 1.213 1.097 -0.116
Si2H2 disilyne rSiSi 2.215 2.101 -0.114
N2 Nitrogen diatomic rNN 1.098 1.205 0.108
N2 Nitrogen diatomic rNN 1.098 1.205 0.108
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.701 0.098
Si2H2 disilyne rSiSi 2.215 2.120 -0.096
KH Potassium hydride rKH 2.243 2.338 0.095
Na2 Sodium diatomic rNaNa 3.079 3.171 0.092
KOH Potassium hydroxide rOK 2.212 2.303 0.091
ClF3 Chlorine trifluoride rFCl 1.697 1.781 0.085
ClF3 Chlorine trifluoride rFCl 1.697 1.781 0.085
S4 Sulfur tetramer rSS 2.155 2.239 0.084
NaLi lithium sodium rLiNa 2.889 2.968 0.079
FSN Thiazyl fluoride rFS 1.643 1.719 0.076
SF5Cl sulfur chloropentafluoride rSCl 2.030 2.105 0.075
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.787 0.074
SiC silicon monocarbide rCSi 1.722 1.653 -0.069
B4H10 Tetraborane(10) rHB 1.484 1.415 -0.069
Si2H2 disilyne rSiH 1.668 1.737 0.069
OClO Chlorine dioxide rClO 1.470 1.536 0.066
CFCl chlorofluoromethylene rCCl 1.714 1.780 0.066
C4H8O2 Ethyl acetate rCO 1.448 1.514 0.066
C2 Carbon diatomic rCC 1.243 1.307 0.065
ClF3 Chlorine trifluoride rFCl 1.697 1.759 0.063
ClF3 Chlorine trifluoride rFCl 1.697 1.759 0.063
ClF3 Chlorine trifluoride rFCl 1.597 1.659 0.062
ClF3 Chlorine trifluoride rFCl 1.597 1.659 0.062
B2 Boron diatomic rBB 1.590 1.528 -0.062
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.600 0.061
B2 Boron diatomic rBB 1.590 1.647 0.057
B4H10 Tetraborane(10) rHB 1.315 1.258 -0.057
CH2ClCCCl 1,3-dichloropropyne rCCl 1.779 1.834 0.055
CH3CHNOH Acetaldoxime rCC 1.550 1.495 -0.055
BN boron nitride rBN 1.325 1.271 -0.054
SF4 Sulfur tetrafluoride rSF 1.545 1.599 0.054
C2H2+ acetylene cation rCC 1.253 1.306 0.053
N2O4 Dinitrogen tetroxide rNN 1.782 1.835 0.053
GaCl3 Gallium trichloride rClGa 2.180 2.127 -0.053
Cl2 Chlorine diatomic rClCl 1.988 2.040 0.052
OPCl Phosphorus oxychloride rPCl 2.059 2.110 0.051
SF4 Sulfur tetrafluoride rSF 1.646 1.697 0.051
SFCl Sulfur chloride fluoride rSCl 1.994 2.045 0.051
135 molecules.