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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 HSEh1PBE/6-311+G(3df,2p)

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.198 3.113
C4H6 1-Methylcyclopropene rCH 1.087 3.400 2.313
C4H6 1-Methylcyclopropene rCC 1.476 2.250 0.774
C4H6 1-Methylcyclopropene rCH 1.087 1.824 0.737
CH3CH2SH ethanethiol rCH 1.095 1.819 0.724
CH3CH2SH ethanethiol rCH 1.095 1.815 0.720
S4 Sulfur tetramer rSS 2.155 2.836 0.681
C4H6 1-Methylcyclopropene rCH 1.098 1.774 0.676
C4H6 1-Methylcyclopropene rCH 1.098 1.754 0.656
ONNO NO dimer rNN 2.236 1.779 -0.457
C4H10O Methyl propyl ether rCC 1.530 1.093 -0.437
C4H6 1-Methylcyclopropene rCH 1.070 1.499 0.429
CH3CH2SH ethanethiol rCH 1.089 1.516 0.427
CH3CH2SH ethanethiol rCH 1.089 1.515 0.426
CH3CH2SH ethanethiol rCH 1.092 1.516 0.424
C4H6 1-Methylcyclopropene rCC 1.515 1.091 -0.424
CH3CH2SH ethanethiol rCH 1.092 1.515 0.423
C2H4F2 1,2-difluoroethane rCH 1.093 1.511 0.418
C2H4F2 1,2-difluoroethane rCH 1.093 1.498 0.405
CH2CHCH2F Allyl Fluoride rHC 1.130 1.487 0.357
CH2CHCH2F Allyl Fluoride rHC 1.130 1.486 0.356
S4 Sulfur tetramer rSS 2.155 2.501 0.346
C3H3NO Isoxazole rCH 1.075 1.416 0.341
CH3CH2SH ethanethiol rCS 1.820 1.515 -0.305
CH3CH2SH ethanethiol rCS 1.820 1.516 -0.304
C4H10O Methyl propyl ether rCH 1.099 1.398 0.299
CH3CH2SH ethanethiol rCC 1.528 1.819 0.291
CH3CH2SH ethanethiol rCC 1.528 1.815 0.287
Si2H2 disilyne rSiSi 2.215 1.963 -0.252
C2H2+ acetylene cation rCH 1.077 1.314 0.238
Ar2 Argon diatomic rArAr 3.758 3.979 0.221
Si2H2 disilyne rSiH 1.668 1.464 -0.204
S4 Sulfur tetramer rSS 1.898 2.102 0.204
C4H6 1-Methylcyclopropene rCC 1.300 1.499 0.199
Si2H2 disilyne rSiH 1.668 1.493 -0.175
S3 Sulfur trimer rSS 1.917 2.065 0.148
Si2H2 disilyne rSiSi 2.215 2.088 -0.128
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
Si2H2 disilyne rSiSi 2.215 2.102 -0.113
SiP Silicon monophosphide rSiP 2.078 1.972 -0.105
N2 Nitrogen diatomic rNN 1.098 1.196 0.098
N2 Nitrogen diatomic rNN 1.098 1.196 0.098
S4 Sulfur tetramer rSS 2.155 2.079 -0.076
GaCl3 Gallium trichloride rClGa 2.180 2.109 -0.071
C4H8O2 Ethyl acetate rCO 1.448 1.506 0.058
C3H3NO Isoxazole rCC 1.356 1.302 -0.054
Si2H2 disilyne rSiH 1.668 1.720 0.052
He2+ helium diatomic cation rHeHe 1.081 1.132 0.052
H2O2 Hydrogen peroxide rOO 1.475 1.424 -0.051
H2O2 Hydrogen peroxide rOO 1.475 1.424 -0.051
HCF Fluoromethylene rCH 1.138 1.088 -0.050
F2+ flourine diatomic cation rFF 1.322 1.272 -0.050
C3H5 Allyl radical rCC 1.428 1.378 -0.050
56 molecules.