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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 MP4/daug-cc-pVDZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
S4 Sulfur tetramer rSS 2.155 2.925 0.770
CH3CH2SH ethanethiol rCH 1.095 1.853 0.758
S4 Sulfur tetramer rSS 2.155 2.710 0.555
S4 Sulfur tetramer rSS 2.155 2.710 0.555
CH3CH2SH ethanethiol rCH 1.089 1.536 0.447
CH3CH2SH ethanethiol rCH 1.092 1.536 0.444
C2H4F2 1,2-difluoroethane rCH 1.093 1.525 0.432
CH2CHCH2F Allyl Fluoride rHC 1.130 1.507 0.377
CH3CH2SH ethanethiol rCC 1.528 1.853 0.325
CH3CH2SH ethanethiol rCS 1.820 1.536 -0.284
S4 Sulfur tetramer rSS 1.898 2.175 0.277
C2H2+ acetylene cation rCH 1.077 1.331 0.255
C2H2+ acetylene cation rCC 1.253 1.351 0.099
S4 Sulfur tetramer rSS 1.898 1.985 0.087
S4 Sulfur tetramer rSS 1.898 1.985 0.087
N2 Nitrogen diatomic rNN 1.213 1.129 -0.083
N2 Nitrogen diatomic rNN 1.213 1.129 -0.083
SO+ sulfur monoxide cation rOS 1.424 1.506 0.082
SeO2 Selenium dioxide rSeO 1.607 1.685 0.078
SO3 Sulfur trioxide rSO 1.418 1.493 0.076
PF2 Phosphorus difluoride rPF 1.579 1.655 0.075
Cl2 Chlorine diatomic rClCl 1.988 2.060 0.072
SF2 sulfur difluoride rSF 1.587 1.659 0.072
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.110 0.072
SFCl Sulfur chloride fluoride rFS 1.606 1.675 0.069
HOSH hydrogen thioperoxide rSO 1.662 1.729 0.067
S3 Sulfur trimer rSS 1.917 1.984 0.067
LiBr Lithium Bromide rLiBr 2.170 2.237 0.067
Br2 Bromine diatomic rBrBr 2.281 2.347 0.066
SiH2F2 difluorosilane rSiF 1.576 1.642 0.066
SFCl Sulfur chloride fluoride rSCl 1.994 2.060 0.066
BrCl Bromine monochloride rClBr 2.136 2.201 0.065
SiHF3 trifluorosilane rSiF 1.563 1.625 0.062
SiSe Silicon Monoselenide rSiSe 2.058 2.119 0.061
S2 Sulfur diatomic rSS 1.889 1.949 0.060
SiBr+ Silicon monobromide cation rSiBr 2.095 2.154 0.058
LiCl lithium chloride rLiCl 2.021 2.078 0.058
SiH3Cl chlorosilane rSiCl 2.051 2.105 0.055
38 molecules.