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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 CCSD(T)/3-21G*

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
CaH Calcium monohydride rCaH 2.003 2.216 0.213
CaH Calcium monohydride rCaH 2.003 2.215 0.213
CaCl calcium monochloride rClCa 2.437 2.635 0.199
CaO Calcium monoxide rOCa 1.822 2.012 0.190
CaO Calcium monoxide rOCa 1.822 2.012 0.190
O2 Oxygen diatomic rOO 1.208 1.331 0.124
Na2 Sodium diatomic rNaNa 3.079 3.190 0.111
CaOH Calcium monohydroxide rOCa 1.976 2.080 0.104
F2 Fluorine diatomic rFF 1.412 1.497 0.085
N2 Nitrogen diatomic rNN 1.213 1.127 -0.085
N2 Nitrogen diatomic rNN 1.213 1.127 -0.085
LiH Lithium Hydride rLiH 1.595 1.674 0.079
CH3I methyl iodide rCI 2.136 2.212 0.077
CH3I methyl iodide rCI 2.136 2.212 0.077
ICl Iodine monochloride rClI 2.321 2.397 0.076
NO Nitric oxide rNO 1.154 1.218 0.065
NO Nitric oxide rNO 1.154 1.218 0.065
Cl2 Chlorine diatomic rClCl 1.988 2.045 0.057
CaOH Calcium monohydroxide rOH 0.930 0.986 0.056
BF Boron monofluoride rBF 1.267 1.320 0.053
IF Iodine monofluoride rFI 1.910 1.962 0.052
21 molecules.