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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 B2PLYP=FULLultrafine/daug-cc-pVTZ

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 3.407 2.320
C4H6 1-Methylcyclopropene rCC 1.476 2.252 0.776
CH3CH2SH ethanethiol rCH 1.095 1.832 0.737
C4H6 1-Methylcyclopropene rCH 1.087 1.822 0.735
CH3CH2SH ethanethiol rCH 1.095 1.829 0.734
S4 Sulfur tetramer rSS 2.155 2.871 0.716
C4H6 1-Methylcyclopropene rCH 1.098 1.770 0.672
C4H6 1-Methylcyclopropene rCH 1.098 1.753 0.655
S4 Sulfur tetramer rSS 2.155 2.596 0.441
S4 Sulfur tetramer rSS 2.155 2.596 0.441
C4H6 1-Methylcyclopropene rCH 1.070 1.505 0.435
CH3CH2SH ethanethiol rCH 1.089 1.520 0.431
CH3CH2SH ethanethiol rCH 1.089 1.518 0.429
C4H6 1-Methylcyclopropene rCC 1.515 1.086 -0.429
CH3CH2SH ethanethiol rCH 1.092 1.520 0.428
CH3CH2SH ethanethiol rCH 1.092 1.518 0.426
C2H4F2 1,2-difluoroethane rCH 1.093 1.512 0.419
C2H4F2 1,2-difluoroethane rCH 1.093 1.499 0.406
ONNO NO dimer rNN 2.236 1.876 -0.360
CH2CHCH2F Allyl Fluoride rHC 1.130 1.490 0.360
CH2CHCH2F Allyl Fluoride rHC 1.130 1.487 0.357
C3H3NO Isoxazole rCH 1.075 1.417 0.342
CH3CH2SH ethanethiol rCC 1.528 1.832 0.304
CH3CH2SH ethanethiol rCS 1.820 1.518 -0.302
CH3CH2SH ethanethiol rCC 1.528 1.829 0.301
CH3CH2SH ethanethiol rCS 1.820 1.520 -0.300
Si2H2 disilyne rSiSi 2.215 1.974 -0.242
C2H2+ acetylene cation rCH 1.077 1.314 0.237
S4 Sulfur tetramer rSS 1.898 2.127 0.229
Si2H2 disilyne rSiH 1.668 1.455 -0.213
C4H6 1-Methylcyclopropene rCC 1.300 1.508 0.208
Si2H2 disilyne rSiH 1.668 1.486 -0.182
Ar2 Argon diatomic rArAr 3.758 3.893 0.135
N2 Nitrogen diatomic rNN 1.213 1.098 -0.114
N2 Nitrogen diatomic rNN 1.213 1.098 -0.114
N2 Nitrogen diatomic rNN 1.213 1.098 -0.114
N2 Nitrogen diatomic rNN 1.213 1.098 -0.114
N2 Nitrogen diatomic rNN 1.098 1.210 0.113
N2 Nitrogen diatomic rNN 1.098 1.210 0.113
Si2H2 disilyne rSiSi 2.215 2.104 -0.112
Si2H2 disilyne rSiSi 2.215 2.116 -0.100
SiP Silicon monophosphide rSiP 2.078 1.991 -0.086
C4H8O2 Ethyl acetate rCO 1.448 1.509 0.061
GaO Gallium monoxide rOGa 1.743 1.685 -0.058
HCF Fluoromethylene rCH 1.138 1.084 -0.054
C2H2+ acetylene cation rCC 1.253 1.304 0.051
47 molecules.