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 CCSD=FULL/cc-pVQZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.187 3.102
C4H6 1-Methylcyclopropene rCH 1.087 3.398 2.311
C4H6 1-Methylcyclopropene rCC 1.476 2.244 0.768
C4H6 1-Methylcyclopropene rCH 1.087 1.818 0.731
S4 Sulfur tetramer rSS 2.155 2.845 0.690
C4H6 1-Methylcyclopropene rCH 1.098 1.767 0.669
C4H6 1-Methylcyclopropene rCH 1.098 1.751 0.653
ONNO NO dimer rNN 2.236 1.681 -0.555
Be2 Beryllium diatomic rBeBe 2.460 1.997 -0.463
C4H6 1-Methylcyclopropene rCC 1.515 1.084 -0.431
C4H6 1-Methylcyclopropene rCH 1.070 1.499 0.429
GaP Gallium monophosphide rPGa 2.450 2.070 -0.380
GaP Gallium monophosphide rPGa 2.450 2.070 -0.380
GaP Gallium monophosphide rPGa 2.450 2.070 -0.380
GaP Gallium monophosphide rPGa 2.450 2.070 -0.380
CH2CHCH2F Allyl Fluoride rHC 1.130 1.489 0.359
AlP Aluminum monophosphide rAlP 2.400 2.056 -0.344
AlP Aluminum monophosphide rAlP 2.400 2.056 -0.344
AlP Aluminum monophosphide rAlP 2.400 2.056 -0.344
S4 Sulfur tetramer rSS 2.155 2.489 0.334
GaP Gallium monophosphide rPGa 2.110 2.430 0.320
GaP Gallium monophosphide rPGa 2.110 2.430 0.320
GaP Gallium monophosphide rPGa 2.110 2.430 0.320
GaP Gallium monophosphide rPGa 2.110 2.430 0.320
Si2H2 disilyne rSiSi 2.215 1.955 -0.260
Mg2 Magnesium diatomic rMgMg 3.891 4.142 0.252
C2H2+ acetylene cation rCH 1.077 1.307 0.230
Ar2 Argon diatomic rArAr 3.758 3.985 0.227
Si2H2 disilyne rSiH 1.668 1.445 -0.223
AlP Aluminum monophosphide rAlP 2.400 2.187 -0.213
AlP Aluminum monophosphide rAlP 2.400 2.187 -0.213
AlP Aluminum monophosphide rAlP 2.400 2.187 -0.213
AlP Aluminum monophosphide rAlP 2.400 2.187 -0.213
AlP Aluminum monophosphide rAlP 2.400 2.187 -0.213
AlP Aluminum monophosphide rAlP 2.400 2.187 -0.213
S4 Sulfur tetramer rSS 1.898 2.104 0.206
AlP Aluminum monophosphide rAlP 2.260 2.056 -0.204
AlP Aluminum monophosphide rAlP 2.260 2.056 -0.204
AlP Aluminum monophosphide rAlP 2.260 2.056 -0.204
C4H6 1-Methylcyclopropene rCC 1.300 1.502 0.202
Si2H2 disilyne rSiH 1.668 1.474 -0.194
GaP Gallium monophosphide rPGa 2.240 2.430 0.190
GaP Gallium monophosphide rPGa 2.240 2.430 0.190
GaP Gallium monophosphide rPGa 2.240 2.430 0.190
GaP Gallium monophosphide rPGa 2.240 2.430 0.190
GaP Gallium monophosphide rPGa 2.250 2.070 -0.180
GaP Gallium monophosphide rPGa 2.250 2.070 -0.180
GaP Gallium monophosphide rPGa 2.250 2.070 -0.180
GaP Gallium monophosphide rPGa 2.250 2.070 -0.180
GaP Gallium monophosphide rPGa 2.250 2.430 0.180
GaP Gallium monophosphide rPGa 2.250 2.430 0.180
GaP Gallium monophosphide rPGa 2.250 2.430 0.180
GaP Gallium monophosphide rPGa 2.250 2.430 0.180
GaP Gallium monophosphide rPGa 2.240 2.070 -0.170
GaP Gallium monophosphide rPGa 2.240 2.070 -0.170
GaP Gallium monophosphide rPGa 2.240 2.070 -0.170
GaP Gallium monophosphide rPGa 2.240 2.070 -0.170
AlP Aluminum monophosphide rAlP 2.220 2.056 -0.164
AlP Aluminum monophosphide rAlP 2.220 2.056 -0.164
AlP Aluminum monophosphide rAlP 2.220 2.056 -0.164
Be2 Beryllium diatomic rBeBe 2.460 2.620 0.160
S3 Sulfur trimer rSS 1.917 2.072 0.155
Si2H2 disilyne rSiSi 2.215 2.091 -0.125
NaH sodium hydride rNaH 1.887 1.762 -0.124
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 2.096 -0.119
Na2 Sodium diatomic rNaNa 3.079 2.965 -0.114
Na2 Sodium diatomic rNaNa 3.079 2.965 -0.114
S4 Sulfur tetramer rSS 2.155 2.047 -0.108
N2 Nitrogen diatomic rNN 1.098 1.204 0.106
N2 Nitrogen diatomic rNN 1.098 1.204 0.106
Ar2+ Argon diatomic cation rArAr 2.320 2.408 0.088
SiC silicon monocarbide rCSi 1.722 1.639 -0.083
B2 Boron diatomic rBB 1.590 1.511 -0.079
NaLi lithium sodium rLiNa 2.889 2.813 -0.076
AlP Aluminum monophosphide rAlP 2.260 2.187 -0.073
AlP Aluminum monophosphide rAlP 2.260 2.187 -0.073
AlP Aluminum monophosphide rAlP 2.260 2.187 -0.073
AlP Aluminum monophosphide rAlP 2.260 2.187 -0.073
AlP Aluminum monophosphide rAlP 2.260 2.187 -0.073
AlP Aluminum monophosphide rAlP 2.260 2.187 -0.073
C2 Carbon diatomic rCC 1.243 1.303 0.061
HCF Fluoromethylene rCH 1.138 1.081 -0.057
Ne2+ Neon diatomic cation rNeNe 1.765 1.708 -0.057
BN boron nitride rBN 1.325 1.269 -0.056
GaO Gallium monoxide rOGa 1.743 1.690 -0.053
GaO Gallium monoxide rOGa 1.743 1.690 -0.053
C3H5 Allyl radical rCC 1.428 1.378 -0.050
91 molecules.