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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/cc-pVTZ

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C4H10O Ethanol, 1,1-dimethyl- rCH 1.117 2.408 1.291
C4H10O Ethanol, 1,1-dimethyl- rCO 1.446 2.149 0.703
C3H3NO Isoxazole rCH 1.075 1.406 0.331
C2H4O3 trioxolane124 rCN 1.303 2.170 0.867
CH3CF3 Ethane, 1,1,1-trifluoro- rCF 1.340 1.664 0.324
C4H10O Methyl propyl ether rCC 1.530 1.086 -0.444
C4H10O Methyl propyl ether rCH 1.099 1.405 0.306
C4H6 1-Methylcyclopropene rCH 1.085 4.192 3.107
C4H6 1-Methylcyclopropene rCH 1.087 3.394 2.307
C4H6 1-Methylcyclopropene rCC 1.476 2.243 0.767
C4H6 1-Methylcyclopropene rCH 1.087 1.819 0.732
C4H6 1-Methylcyclopropene rCH 1.098 1.767 0.669
C4H6 1-Methylcyclopropene rCH 1.098 1.749 0.651
C4H6 1-Methylcyclopropene rCC 1.515 1.082 -0.433
C4H6 1-Methylcyclopropene rCH 1.070 1.501 0.431
C4H6 1-Methylcyclopropene rCC 1.300 1.505 0.205
CH3SO2NH2 methanesulfonamide rCN 1.207 1.662 0.456
PF3 Phosphorus trifluoride rFP 1.561 1.673 0.112
GaP Gallium monophosphide rPGa 2.450 2.182 -0.268
Ne2 Neon diatomic rNeNe 3.100 2.977 -0.123
ArH+ Argon hydride cation rArH 1.292 1.441 0.149
Ar2 Argon diatomic rArAr 3.758 3.915 0.157
B2Cl4 Diboron tetrachloride rBB 1.702 1.551 -0.151
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.040 2.263 0.223
Al2Cl6 Aluminum, di-μ-chlorotetrachlorodi- rAlCl 2.240 2.078 -0.162
HSSSH trisulfane rHS 1.344 2.056 0.712
S4 Sulfur tetramer rSS 2.155 2.589 0.434
AlP Aluminum monophosphide rAlP 2.400 2.194 -0.206
AlP Aluminum monophosphide rAlP 2.220 2.051 -0.169
Mg2 Magnesium diatomic rMgMg 3.891 2.959 -0.932
Al2 Aluminum diatomic rAlAl 2.701 2.453 -0.248
31 molecules.