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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/6-31+G**

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
H2ONH3 Water Ammonia Dimer rNH 2.983 2.052 -0.931
C4H4N2O2 Uracil rNH 0.836 1.011 0.175
C4H4N2O2 Uracil rCH 0.931 1.081 0.150
C4H4N2O2 Uracil rNH 0.877 1.015 0.138
C4H4N2O2 Uracil rCH 0.957 1.085 0.128
C(CH3)3NH2 2-Propanamine, 2-methyl- rNH 1.048 1.477 0.429
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.436 1.319
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.183 0.737
C2F4 Tetrafluoroethylene rCF 1.319 1.426 0.107
C2Cl4 Tetrachloroethylene rCCl 1.718 1.579 -0.139
C3H3NO Isoxazole rCH 1.075 1.424 0.349
C2H4O3 trioxolane124 rCN 1.303 1.418 0.115
CF3CN Acetonitrile, trifluoro- rCF 1.328 1.429 0.101
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.665 0.325
C4H10O Methyl propyl ether rCC 1.530 1.096 -0.434
C4H10O Methyl propyl ether rCH 1.099 1.418 0.319
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.526 -0.278
CH3SCH2CH3 Ethane, (methylthio)- rCS 1.804 1.528 -0.276
CaO Calcium monoxide rOCa 1.822 2.049 0.227
CF3 Trifluoromethyl radical rCF 1.318 1.431 0.113
HOCO+ Hydrocarboxyl cation rCO 1.209 1.340 0.132
C4H6 1-Methylcyclopropene rCH 1.085 4.225 3.140
C4H6 1-Methylcyclopropene rCH 1.087 3.429 2.342
C4H6 1-Methylcyclopropene rCC 1.476 2.263 0.787
C4H6 1-Methylcyclopropene rCH 1.087 1.829 0.742
C4H6 1-Methylcyclopropene rCH 1.098 1.781 0.683
C4H6 1-Methylcyclopropene rCH 1.098 1.762 0.664
C4H6 1-Methylcyclopropene rCH 1.070 1.513 0.443
C4H6 1-Methylcyclopropene rCC 1.515 1.095 -0.420
C4H6 1-Methylcyclopropene rCC 1.300 1.510 0.210
CH3SO2NH2 methanesulfonamide rCN 1.207 1.700 0.493
H2SO4 Sulfuric acid rOH 0.970 2.889 1.919
PF3 Phosphorus trifluoride rFP 1.561 1.684 0.123
SiF4 Silicon tetrafluoride rSiF 1.554 1.713 0.159
AsF5 Arsenic pentafluoride rAsF 1.711 1.923 0.212
AsF5 Arsenic pentafluoride rAsF 1.656 1.833 0.177
CaBr Calcium monobromide rCaBr 2.594 2.709 0.116
LiK Lithium Potassium rLiK 3.270 3.388 0.118
NO3 Nitrogen trioxide rNO 1.238 1.352 0.114
GaP Gallium monophosphide rPGa 2.450 2.201 -0.249
CaOH Calcium monohydroxide rOCa 1.976 2.110 0.134
ArH+ Argon hydride cation rArH 1.292 1.441 0.149
Na2Cl2 Disodium dichloride rNaCl 2.584 3.251 0.667
ClOOCl Dichlorine dioxide rOCl 1.704 1.576 -0.129
NaO sodium monoxide rONa 2.052 1.858 -0.194
Ar2 Argon diatomic rArAr 3.758 4.070 0.312
Ar2+ Argon diatomic cation rArAr 2.320 2.621 0.301
AlCl Aluminum monochloride rAlCl 2.130 2.420 0.289
B2Cl4 Diboron tetrachloride rBB 1.702 1.545 -0.157
CaF Calcium monofluoride rFCa 1.967 2.280 0.313
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.284 0.244
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.089 -0.151
HSSSH trisulfane rHS 1.344 2.078 0.735
Li2+ lithium diatomic cation rLiLi 3.112 2.955 -0.157
Be2 Beryllium diatomic rBeBe 2.460 1.939 -0.521
B2 Boron diatomic rBB 1.590 1.459 -0.131
CaH Calcium monohydride rCaH 2.003 2.115 0.113
CaCl calcium monochloride rClCa 2.437 2.563 0.126
CaS Calcium sulfide rSCa 2.318 2.479 0.162
AlP Aluminum monophosphide rAlP 2.400 2.219 -0.181
AlP Aluminum monophosphide rAlP 2.220 2.083 -0.137
K2 Potassium diatomic rKK 3.905 4.092 0.186
Mg2 Magnesium diatomic rMgMg 3.891 2.683 -1.208
Al2 Aluminum diatomic rAlAl 2.701 2.516 -0.185
CaC Calcium monocarbide rCCa 2.302 2.438 0.136
65 molecules.