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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/daug-cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.207 3.122
C4H6 1-Methylcyclopropene rCH 1.087 3.416 2.329
C4H6 1-Methylcyclopropene rCC 1.476 2.255 0.779
CH3CH2SH ethanethiol rCH 1.095 1.839 0.744
CH3CH2SH ethanethiol rCH 1.095 1.835 0.740
C4H6 1-Methylcyclopropene rCH 1.087 1.827 0.740
S4 Sulfur tetramer rSS 2.155 2.865 0.710
C4H6 1-Methylcyclopropene rCH 1.098 1.777 0.679
C4H6 1-Methylcyclopropene rCH 1.098 1.758 0.660
Ar2 Argon diatomic rArAr 3.758 4.346 0.588
C4H6 1-Methylcyclopropene rCH 1.070 1.507 0.437
CH3CH2SH ethanethiol rCH 1.089 1.524 0.435
CH3CH2SH ethanethiol rCH 1.089 1.523 0.434
CH3CH2SH ethanethiol rCH 1.092 1.524 0.432
CH3CH2SH ethanethiol rCH 1.092 1.523 0.431
C2H4F2 1,2-difluoroethane rCH 1.093 1.518 0.425
C4H6 1-Methylcyclopropene rCC 1.515 1.091 -0.424
C2H4F2 1,2-difluoroethane rCH 1.093 1.505 0.412
S4 Sulfur tetramer rSS 2.155 2.550 0.395
CH2CHCH2F Allyl Fluoride rHC 1.130 1.493 0.363
CH2CHCH2F Allyl Fluoride rHC 1.130 1.491 0.361
ONNO NO dimer rNN 2.236 1.892 -0.344
C3H3NO Isoxazole rCH 1.075 1.419 0.344
CH3CH2SH ethanethiol rCC 1.528 1.839 0.311
CH3CH2SH ethanethiol rCC 1.528 1.835 0.307
CH3CH2SH ethanethiol rCS 1.820 1.523 -0.297
CH3CH2SH ethanethiol rCS 1.820 1.524 -0.296
Si2H2 disilyne rSiSi 2.215 1.970 -0.245
C2H2+ acetylene cation rCH 1.077 1.320 0.243
S4 Sulfur tetramer rSS 1.898 2.125 0.227
Si2H2 disilyne rSiH 1.668 1.462 -0.206
C4H6 1-Methylcyclopropene rCC 1.300 1.506 0.206
Si2H2 disilyne rSiH 1.668 1.492 -0.176
Si2H2 disilyne rSiSi 2.215 2.098 -0.118
N2 Nitrogen diatomic rNN 1.213 1.095 -0.117
N2 Nitrogen diatomic rNN 1.213 1.095 -0.117
N2 Nitrogen diatomic rNN 1.213 1.095 -0.117
N2 Nitrogen diatomic rNN 1.213 1.095 -0.117
N2 Nitrogen diatomic rNN 1.098 1.204 0.107
N2 Nitrogen diatomic rNN 1.098 1.204 0.107
Si2H2 disilyne rSiSi 2.215 2.114 -0.101
SiP Silicon monophosphide rSiP 2.078 1.984 -0.093
NaLi lithium sodium rLiNa 2.889 2.957 0.068
C4H8O2 Ethyl acetate rCO 1.448 1.513 0.065
Na2 Sodium diatomic rNaNa 3.079 3.144 0.065
Si2H2 disilyne rSiH 1.668 1.724 0.056
C2H2+ acetylene cation rCC 1.253 1.307 0.054
47 molecules.