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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 MP3=FULL/3-21G

17 02 03 13 22
Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
C2H6O2S Dimethyl sulfone rSO 1.431 1.594 0.163
CH3Cl Methyl chloride rCCl 1.785 1.910 0.124
CH2BrCl Methane, bromochloro- rCCl 1.755 1.895 0.140
CH2Cl2 Methylene chloride rCCl 1.767 1.881 0.114
CH3SCH3 Dimethyl sulfide rCS 1.802 1.907 0.105
ClCOClCO Oxalyl chloride rCCl 1.744 1.879 0.135
C6H4Cl2 1,4-dichlorobenzene rCCl 1.729 1.838 0.109
CH2BrF Methane, bromofluoro- rCBr 1.915 2.019 0.104
C2H4S Thiirane rCS 1.815 1.951 0.136
C4H10O Methyl propyl ether rCC 1.530 1.097 -0.433
C4H10O Methyl propyl ether rCH 1.099 1.460 0.361
CHFClBr fluorochlorobromomethane rCCl 1.745 1.899 0.154
CH2ClCCCl 1,3-dichloropropyne rCCl 1.779 1.916 0.137
CaO Calcium monoxide rOCa 1.822 2.040 0.218
CFCl chlorofluoromethylene rCCl 1.714 1.969 0.255
C2H2ClF 1-chloro-1-fluoroethylene rCCl 1.704 1.840 0.136
CH3SO2NH2 methanesulfonamide rCN 1.207 1.765 0.558
NHCl2 dichloroamine rNCl 1.760 1.904 0.144
CBr Carbon monobromide rCBr 1.821 1.975 0.154
SiH2Cl2 dichlorosilane rSiCl 2.033 2.188 0.155
CH3SSH Hydrogen methyl disulfide rSS 2.038 2.314 0.276
CH2Cl chloromethyl radical rCCl 1.691 1.825 0.134
SO3 Sulfur trioxide rSO 1.418 1.560 0.143
NaI Sodium Iodide rNaI 2.711 2.839 0.127
KH Potassium hydride rKH 2.243 2.394 0.151
Br2 Bromine diatomic rBrBr 2.281 2.503 0.222
F2+ flourine diatomic cation rFF 1.322 1.423 0.101
Cl2+ chlorine diatomic cation rClCl 1.892 2.226 0.334
SF4 Sulfur tetrafluoride rSF 1.545 1.658 0.113
AsCl3 Arsenous trichloride rClAs 2.166 2.328 0.163
CaBr2 Calcium dibromide rCaBr 2.616 2.837 0.221
SiBr4 Silicon tetrabromide rSiBr 2.183 2.326 0.143
ClF Chlorine monofluoride rFCl 1.628 1.759 0.131
ClF3 Chlorine trifluoride rFCl 1.597 1.784 0.187
ClF3 Chlorine trifluoride rFCl 1.697 1.848 0.151
HOCl hypochlorous acid rClO 1.697 1.839 0.141
CaBr Calcium monobromide rCaBr 2.594 2.866 0.273
NCl3 nitrogen trichloride rNCl 1.754 1.911 0.158
As4 Arsenic tetramer rAsAs 2.435 2.651 0.216
NCl nitrogen monochloride rNCl 1.611 1.794 0.184
PS phosphorus sulfide rPS 1.900 2.109 0.209
ClOOCl Dichlorine dioxide rOCl 1.704 1.857 0.153
Ar2 Argon diatomic rArAr 3.758 4.087 0.329
Ar2+ Argon diatomic cation rArAr 2.320 2.597 0.277
S3 Sulfur trimer rSS 1.917 2.152 0.235
H2S2 Disulfane rSS 2.056 2.325 0.269
SiH3Br bromosilane rSiBr 2.210 2.368 0.158
SiH3Cl chlorosilane rSiCl 2.051 2.215 0.164
XeF2 Xenon difluoride rFXe 1.974 2.096 0.121
SOF4 Sulfur tetrafluoride oxide rSO 1.409 1.541 0.132
SOF4 Sulfur tetrafluoride oxide rFS 1.539 1.650 0.111
XeF4 Xenon tetrafluoride rFXe 1.935 2.060 0.125
SF2 sulfur difluoride rSF 1.587 1.691 0.104
SO+ sulfur monoxide cation rOS 1.424 1.527 0.103
BrCl Bromine monochloride rClBr 2.136 2.382 0.246
CrH Chromium hydride rHCr 1.655 1.773 0.118
NH2SH Thiohydroxylamine rNS 1.719 1.826 0.107
IO Iodine monoxide rIO 1.868 1.979 0.111
SiBr Silicon monobromide rSiBr 2.209 2.408 0.199
SiBr+ Silicon monobromide cation rSiBr 2.095 2.251 0.156
SCl sulfur monochloride rSCl 1.975 2.190 0.215
BH3PH3 borane phosphine rBP 1.937 2.080 0.143
S4 Sulfur tetramer rSS 2.155 2.417 0.262
S4 Sulfur tetramer rSS 1.898 2.135 0.237
TiCl Titanium Monochloride rClTi 2.265 2.393 0.129
CaS Calcium sulfide rSCa 2.318 2.699 0.381
OPCl Phosphorus oxychloride rPCl 2.059 2.326 0.267
AlBr Aluminum monobromide rAlBr 2.295 2.427 0.132
S2 Sulfur diatomic rSS 1.889 2.110 0.221
S2N2 Disulfur dinitride rNS 1.642 1.799 0.158
ClOF3 Chlorine trifluoride oxide rOCl 1.405 1.622 0.217
ClOF3 Chlorine trifluoride oxide rFCl 1.603 1.803 0.200
ClOF3 Chlorine trifluoride oxide rFCl 1.713 1.852 0.139
HOSH hydrogen thioperoxide rSO 1.662 1.789 0.127
SFCl Sulfur chloride fluoride rSCl 1.994 2.296 0.302
CaC Calcium monocarbide rCCa 2.302 2.478 0.177
76 molecules.