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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 MP2=FULL/aug-cc-pVTZ

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H6 1-Methylcyclopropene rCH 1.085 4.196 3.111
C3H6O 2-Propen-1-ol rOH 0.960 4.042 3.082
C3H6O 2-Propen-1-ol rCH 1.092 3.482 2.390
C4H6 1-Methylcyclopropene rCH 1.087 3.391 2.304
C3H6O 2-Propen-1-ol rCH 1.091 2.730 1.639
C3H6O 2-Propen-1-ol rCH 1.078 2.481 1.403
C3H6O 2-Propen-1-ol rCH 1.102 2.348 1.246
C3H6O 2-Propen-1-ol rCH 1.096 2.083 0.987
Mg2 Magnesium diatomic rMgMg 3.891 2.959 -0.932
C4H6 1-Methylcyclopropene rCC 1.476 2.245 0.769
C4H6 1-Methylcyclopropene rCH 1.087 1.822 0.735
HSSSH trisulfane rHS 1.344 2.065 0.721
HSSSH trisulfane rHS 1.344 2.065 0.721
CH3CH2SH ethanethiol rCH 1.095 1.814 0.719
CH3CH2SH ethanethiol rCH 1.095 1.812 0.717
HSSSH trisulfane rHS 1.344 2.054 0.710
HSSSH trisulfane rHS 1.344 2.054 0.710
HSSSH trisulfane rHS 1.344 2.053 0.710
HSSSH trisulfane rHS 1.344 2.053 0.710
S4 Sulfur tetramer rSS 2.155 2.830 0.675
C4H6 1-Methylcyclopropene rCH 1.098 1.769 0.671
C4H6 1-Methylcyclopropene rCH 1.098 1.753 0.655
C3H6O 2-Propen-1-ol rCO 1.428 2.074 0.646
C3H6O 2-Propen-1-ol rCC 1.337 1.945 0.608
Ne2 Neon diatomic rNeNe 3.100 2.524 -0.576
C3H6O 2-Propen-1-ol rCC 1.502 0.961 -0.541
Be2 Beryllium diatomic rBeBe 2.460 2.004 -0.456
Be2 Beryllium diatomic rBeBe 2.460 2.004 -0.456
Be2 Beryllium diatomic rBeBe 2.460 2.004 -0.456
CH3SO2NH2 methanesulfonamide rCN 1.207 1.662 0.456
C4H10O Methyl propyl ether rCC 1.530 1.088 -0.442
S4 Sulfur tetramer rSS 2.155 2.589 0.434
S4 Sulfur tetramer rSS 2.155 2.589 0.434
C4H6 1-Methylcyclopropene rCC 1.515 1.084 -0.431
C4H6 1-Methylcyclopropene rCH 1.070 1.501 0.431
CH3CH2SH ethanethiol rCH 1.089 1.511 0.422
CH3CH2SH ethanethiol rCH 1.089 1.511 0.422
CH3CH2SH ethanethiol rCH 1.092 1.511 0.419
CH3CH2SH ethanethiol rCH 1.092 1.511 0.419
C2H4F2 1,2-difluoroethane rCH 1.093 1.504 0.411
GaP Gallium monophosphide rPGa 2.450 2.040 -0.410
GaP Gallium monophosphide rPGa 2.450 2.040 -0.410
GaP Gallium monophosphide rPGa 2.450 2.040 -0.410
GaP Gallium monophosphide rPGa 2.450 2.040 -0.410
C2H4F2 1,2-difluoroethane rCH 1.093 1.492 0.399
CH2CHCH2F Allyl Fluoride rHC 1.130 1.484 0.354
AlP Aluminum monophosphide rAlP 2.400 2.049 -0.351
AlP Aluminum monophosphide rAlP 2.400 2.049 -0.351
AlP Aluminum monophosphide rAlP 2.400 2.049 -0.351
CH2CHCH2F Allyl Fluoride rHC 1.130 1.481 0.351
Al2 Aluminum diatomic rAlAl 2.701 2.371 -0.330
C3H3NO Isoxazole rCH 1.075 1.405 0.330
CH3CH2SH ethanethiol rCS 1.820 1.511 -0.309
CH3CH2SH ethanethiol rCS 1.820 1.511 -0.309
C4H10O Methyl propyl ether rCH 1.099 1.407 0.308
ONNO NO dimer rNN 2.236 1.947 -0.289
Al2 Aluminum diatomic rAlAl 2.701 2.987 0.286
CH3CH2SH ethanethiol rCC 1.528 1.814 0.286
CH3CH2SH ethanethiol rCC 1.528 1.812 0.284
GaP Gallium monophosphide rPGa 2.450 2.182 -0.268
GaP Gallium monophosphide rPGa 2.450 2.182 -0.268
GaP Gallium monophosphide rPGa 2.450 2.182 -0.268
GaP Gallium monophosphide rPGa 2.450 2.182 -0.268
Al2 Aluminum diatomic rAlAl 2.701 2.958 0.257
Si2H2 disilyne rSiSi 2.215 1.973 -0.243
Al2 Aluminum diatomic rAlAl 2.701 2.462 -0.239
C2H2+ acetylene cation rCH 1.077 1.299 0.222
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.261 0.221
Si2H2 disilyne rSiH 1.668 1.449 -0.219
B2 Boron diatomic rBB 1.590 1.375 -0.215
AlP Aluminum monophosphide rAlP 2.260 2.049 -0.211
AlP Aluminum monophosphide rAlP 2.260 2.049 -0.211
AlP Aluminum monophosphide rAlP 2.260 2.049 -0.211
AlP Aluminum monophosphide rAlP 2.400 2.189 -0.211
AlP Aluminum monophosphide rAlP 2.400 2.189 -0.211
AlP Aluminum monophosphide rAlP 2.400 2.189 -0.211
AlP Aluminum monophosphide rAlP 2.400 2.189 -0.211
AlP Aluminum monophosphide rAlP 2.400 2.189 -0.211
AlP Aluminum monophosphide rAlP 2.400 2.189 -0.211
GaP Gallium monophosphide rPGa 2.250 2.040 -0.210
GaP Gallium monophosphide rPGa 2.250 2.040 -0.210
GaP Gallium monophosphide rPGa 2.250 2.040 -0.210
GaP Gallium monophosphide rPGa 2.250 2.040 -0.210
C4H6 1-Methylcyclopropene rCC 1.300 1.507 0.207
S4 Sulfur tetramer rSS 1.898 2.105 0.207
GaP Gallium monophosphide rPGa 2.240 2.040 -0.200
GaP Gallium monophosphide rPGa 2.240 2.040 -0.200
GaP Gallium monophosphide rPGa 2.240 2.040 -0.200
GaP Gallium monophosphide rPGa 2.240 2.040 -0.200
Si2H2 disilyne rSiH 1.668 1.480 -0.188
Si2 Silicon diatomic rSiSi 2.246 2.062 -0.184
Si2 Silicon diatomic rSiSi 2.246 2.064 -0.182
AlP Aluminum monophosphide rAlP 2.220 2.049 -0.171
AlP Aluminum monophosphide rAlP 2.220 2.049 -0.171
AlP Aluminum monophosphide rAlP 2.220 2.049 -0.171
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.078 -0.162
S3 Sulfur trimer rSS 1.917 2.077 0.160
AlN Aluminum nitride rNAl 1.786 1.634 -0.152
CHF2CHF2 1,1,2,2-tetrafluoroethane rCF 1.359 1.511 0.152
ClF3 Chlorine trifluoride rFCl 1.597 1.741 0.144
ClF3 Chlorine trifluoride rFCl 1.597 1.741 0.144
Si2H2 disilyne rSiSi 2.215 2.089 -0.126
N2 Nitrogen diatomic rNN 1.098 1.212 0.115
N2 Nitrogen diatomic rNN 1.098 1.212 0.115
PF3 Phosphorus trifluoride rFP 1.561 1.674 0.113
ZnS Zinc sulfide rSZn 2.046 2.156 0.110
Si2H2 disilyne rSiSi 2.215 2.107 -0.108
N2 Nitrogen diatomic rNN 1.213 1.109 -0.104
N2 Nitrogen diatomic rNN 1.213 1.109 -0.104
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
N2 Nitrogen diatomic rNN 1.213 1.110 -0.103
NF3 Nitrogen trifluoride rNF 1.365 1.466 0.101
VO Vanadium monoxide rVO 1.589 1.491 -0.098
SeO3 selenium trioxide rSeO 1.688 1.595 -0.092
ClOOCl Dichlorine dioxide rOO 1.426 1.334 -0.092
SiP Silicon monophosphide rSiP 2.078 1.987 -0.090
SiP Silicon monophosphide rSiP 2.078 1.989 -0.088
GaCl3 Gallium trichloride rClGa 2.180 2.097 -0.084
GaCl3 Gallium trichloride rClGa 2.180 2.097 -0.084
Ar2+ Argon diatomic cation rArAr 2.320 2.403 0.083
C3H4O Cyclopropanone rCO 1.191 1.273 0.082
CHCl3 Chloroform rCCl 1.762 1.680 -0.082
NS Mononitrogen monosulfide rNS 1.497 1.416 -0.081
B2 Boron diatomic rBB 1.590 1.509 -0.081
B4H10 Tetraborane(10) rHB 1.484 1.405 -0.079
B2 Boron diatomic rBB 1.590 1.512 -0.078
B2 Boron diatomic rBB 1.590 1.512 -0.078
Ar2 Argon diatomic rArAr 3.758 3.682 -0.076
C3H4O Cyclopropanone rCH 1.086 1.012 -0.074
GaP Gallium monophosphide rPGa 2.110 2.182 0.072
GaP Gallium monophosphide rPGa 2.110 2.182 0.072
GaP Gallium monophosphide rPGa 2.110 2.182 0.072
GaP Gallium monophosphide rPGa 2.110 2.182 0.072
PCl3 Phosphorus trichloride rPCl 2.043 1.971 -0.072
FNO Nitrosyl fluoride rNF 1.512 1.441 -0.071
AlP Aluminum monophosphide rAlP 2.260 2.189 -0.071
AlP Aluminum monophosphide rAlP 2.260 2.189 -0.071
AlP Aluminum monophosphide rAlP 2.260 2.189 -0.071
AlP Aluminum monophosphide rAlP 2.260 2.189 -0.071
AlP Aluminum monophosphide rAlP 2.260 2.189 -0.071
AlP Aluminum monophosphide rAlP 2.260 2.189 -0.071
GaP Gallium monophosphide rPGa 2.110 2.040 -0.070
GaP Gallium monophosphide rPGa 2.110 2.040 -0.070
GaP Gallium monophosphide rPGa 2.110 2.040 -0.070
GaP Gallium monophosphide rPGa 2.110 2.040 -0.070
ClOOCl Dichlorine dioxide rOCl 1.704 1.773 0.069
GaP Gallium monophosphide rPGa 2.250 2.182 -0.068
GaP Gallium monophosphide rPGa 2.250 2.182 -0.068
GaP Gallium monophosphide rPGa 2.250 2.182 -0.068
GaP Gallium monophosphide rPGa 2.250 2.182 -0.068
CH3CHNOH Acetaldoxime rCC 1.550 1.483 -0.067
C2 Carbon diatomic rCC 1.243 1.310 0.067
C2 Carbon diatomic rCC 1.243 1.310 0.067
B4H10 Tetraborane(10) rHB 1.315 1.248 -0.067
CH3CHNOH Acetaldoxime rCC 1.550 1.484 -0.066
C2 Carbon diatomic rCC 1.243 1.306 0.063
GaO Gallium monoxide rOGa 1.743 1.680 -0.063
GaO Gallium monoxide rOGa 1.743 1.680 -0.063
HCF Fluoromethylene rCH 1.138 1.075 -0.063
C3H5 Allyl radical rCC 1.428 1.368 -0.060
C3H5 Allyl radical rCC 1.428 1.368 -0.060
ScH Scandium monohydride rScH 1.775 1.716 -0.060
BrO+ Bromine monoxide cation rOBr 1.635 1.575 -0.060
C2H2+ acetylene cation rCC 1.253 1.311 0.059
GaP Gallium monophosphide rPGa 2.240 2.182 -0.058
GaP Gallium monophosphide rPGa 2.240 2.182 -0.058
GaP Gallium monophosphide rPGa 2.240 2.182 -0.058
GaP Gallium monophosphide rPGa 2.240 2.182 -0.058
BH Boron monohydride rBH 1.232 1.175 -0.057
O2- oxygen diatomic anion rOO 1.350 1.295 -0.055
C4H6 Methylenecyclopropane rCH 1.088 1.034 -0.054
C4H8O2 Ethyl acetate rCO 1.448 1.502 0.054
Ne2+ Neon diatomic cation rNeNe 1.765 1.711 -0.054
SiC silicon monocarbide rCSi 1.722 1.669 -0.053
C4H6 Methylenecyclopropane rCH 1.090 1.038 -0.052
ClNO2 Nitryl chloride rNCl 1.840 1.891 0.051
FSN Thiazyl fluoride rFS 1.643 1.694 0.051
FNO Nitrosyl fluoride rNF 1.512 1.562 0.050
182 molecules.