return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Geometry > Bad Calculations > Bad Calculated Bond Lengths OR Resources > Bad Calculations > Geometry > Bad Calculated Bond Lengths

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 B3PW91/6-311+G(3df,2p)

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.200 3.115
Ar2 Argon diatomic rArAr 3.758 6.129 2.371
C4H6 1-Methylcyclopropene rCH 1.087 3.407 2.320
C4H6 1-Methylcyclopropene rCC 1.476 2.252 0.776
C4H6 1-Methylcyclopropene rCH 1.087 1.826 0.739
CH3CH2SH ethanethiol rCH 1.095 1.824 0.729
CH3CH2SH ethanethiol rCH 1.095 1.820 0.725
S4 Sulfur tetramer rSS 2.155 2.848 0.693
C4H6 1-Methylcyclopropene rCH 1.098 1.774 0.676
C4H6 1-Methylcyclopropene rCH 1.098 1.755 0.657
C4H10O Methyl propyl ether rCC 1.530 1.093 -0.437
C4H6 1-Methylcyclopropene rCH 1.070 1.503 0.433
CH3CH2SH ethanethiol rCH 1.089 1.519 0.430
CH3CH2SH ethanethiol rCH 1.089 1.517 0.428
CH3CH2SH ethanethiol rCH 1.092 1.519 0.427
CH3CH2SH ethanethiol rCH 1.092 1.517 0.425
C4H6 1-Methylcyclopropene rCC 1.515 1.091 -0.424
C2H4F2 1,2-difluoroethane rCH 1.093 1.514 0.421
ONNO NO dimer rNN 2.236 1.818 -0.418
C2H4F2 1,2-difluoroethane rCH 1.093 1.501 0.408
CH2CHCH2F Allyl Fluoride rHC 1.130 1.489 0.359
CH2CHCH2F Allyl Fluoride rHC 1.130 1.488 0.358
S4 Sulfur tetramer rSS 2.155 2.512 0.357
C3H3NO Isoxazole rCH 1.075 1.417 0.342
C4H10O Methyl propyl ether rCH 1.099 1.402 0.303
CH3CH2SH ethanethiol rCS 1.820 1.517 -0.303
CH3CH2SH ethanethiol rCS 1.820 1.519 -0.301
CH3CH2SH ethanethiol rCC 1.528 1.824 0.296
CH3CH2SH ethanethiol rCC 1.528 1.820 0.292
Si2H2 disilyne rSiSi 2.215 1.965 -0.250
C2H2+ acetylene cation rCH 1.077 1.317 0.240
S4 Sulfur tetramer rSS 1.898 2.110 0.212
Si2H2 disilyne rSiH 1.668 1.463 -0.205
C4H6 1-Methylcyclopropene rCC 1.300 1.502 0.202
Si2H2 disilyne rSiH 1.668 1.493 -0.175
S3 Sulfur trimer rSS 1.917 2.072 0.155
Si2H2 disilyne rSiSi 2.215 2.090 -0.125
N2 Nitrogen diatomic rNN 1.213 1.091 -0.122
N2 Nitrogen diatomic rNN 1.213 1.091 -0.122
N2 Nitrogen diatomic rNN 1.213 1.091 -0.122
N2 Nitrogen diatomic rNN 1.213 1.091 -0.122
Si2H2 disilyne rSiSi 2.215 2.105 -0.110
SiP Silicon monophosphide rSiP 2.078 1.975 -0.103
N2 Nitrogen diatomic rNN 1.098 1.198 0.100
N2 Nitrogen diatomic rNN 1.098 1.198 0.100
GaCl3 Gallium trichloride rClGa 2.180 2.113 -0.067
S4 Sulfur tetramer rSS 2.155 2.094 -0.061
C4H8O2 Ethyl acetate rCO 1.448 1.508 0.060
He2+ helium diatomic cation rHeHe 1.081 1.140 0.059
C3H3NO Isoxazole rCC 1.356 1.304 -0.052
Si2H2 disilyne rSiH 1.668 1.719 0.051
51 molecules.