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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/6-311G*

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.217 3.132
C4H6 1-Methylcyclopropene rCH 1.087 3.426 2.339
C4H6 1-Methylcyclopropene rCC 1.476 2.261 0.785
HSSSH trisulfane rHS 1.344 2.095 0.751
HSSSH trisulfane rHS 1.344 2.095 0.751
CH3CH2SH ethanethiol rCH 1.095 1.843 0.748
CH3CH2SH ethanethiol rCH 1.095 1.839 0.744
S4 Sulfur tetramer rSS 2.155 2.898 0.743
C4H6 1-Methylcyclopropene rCH 1.087 1.827 0.740
C4H6 1-Methylcyclopropene rCH 1.098 1.777 0.679
C4H6 1-Methylcyclopropene rCH 1.098 1.758 0.660
CH3SO2NH2 methanesulfonamide rCN 1.207 1.696 0.489
S4 Sulfur tetramer rSS 2.155 2.601 0.446
C4H6 1-Methylcyclopropene rCH 1.070 1.511 0.441
CH3CH2SH ethanethiol rCH 1.089 1.526 0.437
CH3CH2SH ethanethiol rCH 1.089 1.525 0.436
C4H10O Methyl propyl ether rCC 1.530 1.095 -0.435
CH3CH2SH ethanethiol rCH 1.092 1.526 0.434
CH3CH2SH ethanethiol rCH 1.092 1.525 0.433
Be2 Beryllium diatomic rBeBe 2.460 2.028 -0.432
C2H4F2 1,2-difluoroethane rCH 1.093 1.518 0.425
C4H6 1-Methylcyclopropene rCC 1.515 1.094 -0.421
C2H4F2 1,2-difluoroethane rCH 1.093 1.507 0.414
GaP Gallium monophosphide rPGa 2.450 2.078 -0.372
GaP Gallium monophosphide rPGa 2.450 2.078 -0.372
GaP Gallium monophosphide rPGa 2.450 2.078 -0.372
GaP Gallium monophosphide rPGa 2.450 2.078 -0.372
CH2CHCH2F Allyl Fluoride rHC 1.130 1.496 0.366
CH2CHCH2F Allyl Fluoride rHC 1.130 1.494 0.364
C3H3NO Isoxazole rCH 1.075 1.422 0.347
Mg2 Magnesium diatomic rMgMg 3.891 3.555 -0.335
AlP Aluminum monophosphide rAlP 2.400 2.076 -0.324
AlP Aluminum monophosphide rAlP 2.400 2.076 -0.324
AlP Aluminum monophosphide rAlP 2.400 2.076 -0.324
Ar2 Argon diatomic rArAr 3.758 4.079 0.321
CH3CH2SH ethanethiol rCC 1.528 1.843 0.315
C4H10O Methyl propyl ether rCH 1.099 1.413 0.314
CH3CH2SH ethanethiol rCC 1.528 1.839 0.311
ONNO NO dimer rNN 2.236 1.940 -0.296
CH3CH2SH ethanethiol rCS 1.820 1.525 -0.295
CH3CH2SH ethanethiol rCS 1.820 1.526 -0.294
Ar2+ Argon diatomic cation rArAr 2.320 2.613 0.293
S4 Sulfur tetramer rSS 1.898 2.153 0.255
Si2H2 disilyne rSiSi 2.215 1.968 -0.247
C2H2+ acetylene cation rCH 1.077 1.319 0.242
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.277 0.237
GaP Gallium monophosphide rPGa 2.450 2.233 -0.217
GaP Gallium monophosphide rPGa 2.450 2.233 -0.217
GaP Gallium monophosphide rPGa 2.450 2.233 -0.217
GaP Gallium monophosphide rPGa 2.450 2.233 -0.217
C4H6 1-Methylcyclopropene rCC 1.300 1.508 0.208
Si2H2 disilyne rSiH 1.668 1.463 -0.205
S3 Sulfur trimer rSS 1.917 2.110 0.193
ClF3 Chlorine trifluoride rFCl 1.597 1.788 0.191
ClF3 Chlorine trifluoride rFCl 1.597 1.788 0.191
AlP Aluminum monophosphide rAlP 2.400 2.212 -0.188
AlP Aluminum monophosphide rAlP 2.400 2.212 -0.188
AlP Aluminum monophosphide rAlP 2.400 2.212 -0.188
AlP Aluminum monophosphide rAlP 2.400 2.212 -0.188
AlP Aluminum monophosphide rAlP 2.400 2.212 -0.188
AlP Aluminum monophosphide rAlP 2.400 2.212 -0.188
AlP Aluminum monophosphide rAlP 2.260 2.076 -0.184
AlP Aluminum monophosphide rAlP 2.260 2.076 -0.184
AlP Aluminum monophosphide rAlP 2.260 2.076 -0.184
ClOOCl Dichlorine dioxide rOCl 1.704 1.887 0.183
Si2H2 disilyne rSiH 1.668 1.492 -0.176
GaP Gallium monophosphide rPGa 2.250 2.078 -0.172
GaP Gallium monophosphide rPGa 2.250 2.078 -0.172
GaP Gallium monophosphide rPGa 2.250 2.078 -0.172
GaP Gallium monophosphide rPGa 2.250 2.078 -0.172
GaP Gallium monophosphide rPGa 2.240 2.078 -0.162
GaP Gallium monophosphide rPGa 2.240 2.078 -0.162
GaP Gallium monophosphide rPGa 2.240 2.078 -0.162
GaP Gallium monophosphide rPGa 2.240 2.078 -0.162
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.082 -0.158
S4 Sulfur tetramer rSS 2.155 2.307 0.152
ClOOCl Dichlorine dioxide rOO 1.426 1.274 -0.151
AlP Aluminum monophosphide rAlP 2.220 2.076 -0.144
AlP Aluminum monophosphide rAlP 2.220 2.076 -0.144
AlP Aluminum monophosphide rAlP 2.220 2.076 -0.144
GaP Gallium monophosphide rPGa 2.110 2.233 0.123
GaP Gallium monophosphide rPGa 2.110 2.233 0.123
GaP Gallium monophosphide rPGa 2.110 2.233 0.123
GaP Gallium monophosphide rPGa 2.110 2.233 0.123
Si2H2 disilyne rSiSi 2.215 2.097 -0.119
Ne2+ Neon diatomic cation rNeNe 1.765 1.881 0.116
N2 Nitrogen diatomic rNN 1.213 1.099 -0.113
N2 Nitrogen diatomic rNN 1.213 1.099 -0.113
N2 Nitrogen diatomic rNN 1.213 1.100 -0.113
N2 Nitrogen diatomic rNN 1.213 1.100 -0.113
N2 Nitrogen diatomic rNN 1.098 1.209 0.111
N2 Nitrogen diatomic rNN 1.098 1.209 0.111
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.707 0.104
Si2H2 disilyne rSiSi 2.215 2.114 -0.101
He2+ helium diatomic cation rHeHe 1.081 1.177 0.097
ClF3 Chlorine trifluoride rFCl 1.697 1.788 0.091
ClF3 Chlorine trifluoride rFCl 1.697 1.788 0.091
SiC silicon monocarbide rCSi 1.722 1.647 -0.075
Si2H2 disilyne rSiH 1.668 1.743 0.075
NaLi lithium sodium rLiNa 2.889 2.964 0.075
ClF3 Chlorine trifluoride rFCl 1.597 1.670 0.074
ClF3 Chlorine trifluoride rFCl 1.597 1.670 0.074
SF5Cl sulfur chloropentafluoride rSCl 2.030 2.104 0.073
Na2 Sodium diatomic rNaNa 3.079 3.152 0.073
ClNO Nitrosyl chloride rNCl 1.975 2.047 0.072
C2 Carbon diatomic rCC 1.243 1.312 0.069
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.782 0.069
FSN Thiazyl fluoride rFS 1.643 1.712 0.069
C4H8O2 Ethyl acetate rCO 1.448 1.515 0.067
CFCl chlorofluoromethylene rCCl 1.714 1.779 0.065
B4H10 Tetraborane(10) rHB 1.484 1.422 -0.062
SeF4 Selenium tetrafluoride rFSe 1.682 1.744 0.062
ClF3 Chlorine trifluoride rFCl 1.697 1.758 0.062
ClF3 Chlorine trifluoride rFCl 1.697 1.758 0.062
B2 Boron diatomic rBB 1.590 1.529 -0.061
B2 Boron diatomic rBB 1.590 1.650 0.060
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.599 0.060
GaCl3 Gallium trichloride rClGa 2.180 2.122 -0.058
OClO Chlorine dioxide rClO 1.470 1.527 0.057
B4H10 Tetraborane(10) rHB 1.315 1.259 -0.056
C2H2+ acetylene cation rCC 1.253 1.308 0.056
Cl2 Chlorine diatomic rClCl 1.988 2.043 0.055
BN boron nitride rBN 1.325 1.270 -0.055
SFCl Sulfur chloride fluoride rSCl 1.994 2.048 0.054
CH3CHNOH Acetaldoxime rCC 1.550 1.497 -0.053
SCl2 Sulfur dichloride rSCl 2.013 2.065 0.052
SF4 Sulfur tetrafluoride rSF 1.545 1.597 0.052
OPCl Phosphorus oxychloride rPCl 2.059 2.109 0.051
ClF Chlorine monofluoride rFCl 1.628 1.679 0.051
CH2ClCCCl 1,3-dichloropropyne rCCl 1.779 1.829 0.051
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.088 0.050
KOH Potassium hydroxide rOH 0.912 0.962 0.050
132 molecules.