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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 PBE1PBE/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.206 3.121
C4H6 1-Methylcyclopropene rCH 1.087 3.408 2.321
C4H6 1-Methylcyclopropene rCC 1.476 2.254 0.778
C4H6 1-Methylcyclopropene rCH 1.087 1.830 0.743
HSSSH trisulfane rHS 1.344 2.078 0.734
HSSSH trisulfane rHS 1.344 2.078 0.734
CH3CH2SH ethanethiol rCH 1.095 1.829 0.734
CH3CH2SH ethanethiol rCH 1.095 1.825 0.730
S4 Sulfur tetramer rSS 2.155 2.876 0.721
C4H6 1-Methylcyclopropene rCH 1.098 1.779 0.681
C4H6 1-Methylcyclopropene rCH 1.098 1.759 0.661
CH3SO2NH2 methanesulfonamide rCN 1.207 1.673 0.467
Be2 Beryllium diatomic rBeBe 2.460 2.011 -0.449
C4H10O Methyl propyl ether rCC 1.530 1.095 -0.435
C4H6 1-Methylcyclopropene rCH 1.070 1.503 0.433
CH3CH2SH ethanethiol rCH 1.089 1.518 0.429
CH3CH2SH ethanethiol rCH 1.089 1.517 0.428
CH3CH2SH ethanethiol rCH 1.092 1.518 0.426
CH3CH2SH ethanethiol rCH 1.092 1.517 0.425
C4H6 1-Methylcyclopropene rCC 1.515 1.093 -0.422
ONNO NO dimer rNN 2.236 1.815 -0.421
C2H4F2 1,2-difluoroethane rCH 1.093 1.511 0.418
C2H4F2 1,2-difluoroethane rCH 1.093 1.499 0.406
S4 Sulfur tetramer rSS 2.155 2.549 0.394
GaP Gallium monophosphide rPGa 2.450 2.079 -0.371
GaP Gallium monophosphide rPGa 2.450 2.079 -0.371
GaP Gallium monophosphide rPGa 2.450 2.079 -0.371
GaP Gallium monophosphide rPGa 2.450 2.079 -0.371
CH2CHCH2F Allyl Fluoride rHC 1.130 1.489 0.359
CH2CHCH2F Allyl Fluoride rHC 1.130 1.488 0.358
C3H3NO Isoxazole rCH 1.075 1.418 0.343
AlP Aluminum monophosphide rAlP 2.400 2.072 -0.328
AlP Aluminum monophosphide rAlP 2.400 2.072 -0.328
AlP Aluminum monophosphide rAlP 2.400 2.072 -0.328
Mg2 Magnesium diatomic rMgMg 3.891 3.582 -0.308
CH3CH2SH ethanethiol rCS 1.820 1.517 -0.303
CH3CH2SH ethanethiol rCS 1.820 1.518 -0.302
CH3CH2SH ethanethiol rCC 1.528 1.829 0.301
C4H10O Methyl propyl ether rCH 1.099 1.400 0.301
CH3CH2SH ethanethiol rCC 1.528 1.825 0.297
Ar2 Argon diatomic rArAr 3.758 4.022 0.264
Si2H2 disilyne rSiSi 2.215 1.966 -0.250
Ar2+ Argon diatomic cation rArAr 2.320 2.565 0.245
C2H2+ acetylene cation rCH 1.077 1.318 0.241
S4 Sulfur tetramer rSS 1.898 2.132 0.234
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.268 0.228
GaP Gallium monophosphide rPGa 2.450 2.232 -0.218
GaP Gallium monophosphide rPGa 2.450 2.232 -0.218
GaP Gallium monophosphide rPGa 2.450 2.232 -0.218
GaP Gallium monophosphide rPGa 2.450 2.232 -0.218
C4H6 1-Methylcyclopropene rCC 1.300 1.503 0.203
Si2H2 disilyne rSiH 1.668 1.465 -0.203
AlP Aluminum monophosphide rAlP 2.400 2.211 -0.189
AlP Aluminum monophosphide rAlP 2.400 2.211 -0.189
AlP Aluminum monophosphide rAlP 2.400 2.211 -0.189
AlP Aluminum monophosphide rAlP 2.400 2.211 -0.189
AlP Aluminum monophosphide rAlP 2.400 2.211 -0.189
AlP Aluminum monophosphide rAlP 2.400 2.211 -0.189
AlP Aluminum monophosphide rAlP 2.260 2.072 -0.188
AlP Aluminum monophosphide rAlP 2.260 2.072 -0.188
AlP Aluminum monophosphide rAlP 2.260 2.072 -0.188
S3 Sulfur trimer rSS 1.917 2.093 0.176
Si2H2 disilyne rSiH 1.668 1.495 -0.173
GaP Gallium monophosphide rPGa 2.250 2.079 -0.171
GaP Gallium monophosphide rPGa 2.250 2.079 -0.171
GaP Gallium monophosphide rPGa 2.250 2.079 -0.171
GaP Gallium monophosphide rPGa 2.250 2.079 -0.171
ClF3 Chlorine trifluoride rFCl 1.597 1.762 0.165
ClF3 Chlorine trifluoride rFCl 1.597 1.762 0.165
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.076 -0.164
GaP Gallium monophosphide rPGa 2.240 2.079 -0.161
GaP Gallium monophosphide rPGa 2.240 2.079 -0.161
GaP Gallium monophosphide rPGa 2.240 2.079 -0.161
GaP Gallium monophosphide rPGa 2.240 2.079 -0.161
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.518 0.159
AlP Aluminum monophosphide rAlP 2.220 2.072 -0.148
AlP Aluminum monophosphide rAlP 2.220 2.072 -0.148
AlP Aluminum monophosphide rAlP 2.220 2.072 -0.148
Si2H2 disilyne rSiSi 2.215 2.090 -0.126
GaP Gallium monophosphide rPGa 2.110 2.232 0.122
GaP Gallium monophosphide rPGa 2.110 2.232 0.122
GaP Gallium monophosphide rPGa 2.110 2.232 0.122
GaP Gallium monophosphide rPGa 2.110 2.232 0.122
ClOOCl Dichlorine dioxide rOO 1.426 1.305 -0.121
N2 Nitrogen diatomic rNN 1.213 1.094 -0.119
N2 Nitrogen diatomic rNN 1.213 1.094 -0.119
N2 Nitrogen diatomic rNN 1.213 1.094 -0.119
N2 Nitrogen diatomic rNN 1.213 1.094 -0.119
N2 Nitrogen diatomic rNN 1.213 1.094 -0.119
N2 Nitrogen diatomic rNN 1.213 1.094 -0.119
Si2H2 disilyne rSiSi 2.215 2.105 -0.110
K2 Potassium diatomic rKK 3.905 4.012 0.107
N2 Nitrogen diatomic rNN 1.098 1.200 0.102
N2 Nitrogen diatomic rNN 1.098 1.200 0.102
ClOOCl Dichlorine dioxide rOCl 1.704 1.795 0.090
SeO3 selenium trioxide rSeO 1.688 1.599 -0.089
SiC silicon monocarbide rCSi 1.722 1.640 -0.082
Ne2+ Neon diatomic cation rNeNe 1.765 1.839 0.074
B4H10 Tetraborane(10) rHB 1.484 1.412 -0.072
B2 Boron diatomic rBB 1.590 1.520 -0.070
GaCl3 Gallium trichloride rClGa 2.180 2.113 -0.067
GaCl3 Gallium trichloride rClGa 2.180 2.114 -0.067
ClF3 Chlorine trifluoride rFCl 1.697 1.762 0.065
ClF3 Chlorine trifluoride rFCl 1.697 1.762 0.065
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.667 0.064
C2 Carbon diatomic rCC 1.243 1.305 0.063
BN boron nitride rBN 1.325 1.263 -0.062
CH3CHNOH Acetaldoxime rCC 1.550 1.490 -0.060
C4H8O2 Ethyl acetate rCO 1.448 1.507 0.059
Li2 Lithium diatomic rLiLi 2.673 2.732 0.059
Si2H2 disilyne rSiH 1.668 1.726 0.058
He2+ helium diatomic cation rHeHe 1.081 1.137 0.057
TiH Titanium monohydride rHTi 1.785 1.731 -0.054
B2 Boron diatomic rBB 1.590 1.643 0.053
B4H10 Tetraborane(10) rHB 1.315 1.263 -0.052
C3H3NO Isoxazole rCC 1.356 1.304 -0.052
C2H2+ acetylene cation rCC 1.253 1.303 0.050
117 molecules.