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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 CISD/6-311G**

Species Name Bond type Bond Length (Å)
Experimental Calculated Difference
N2 Nitrogen diatomic rNN 1.213 1.095 -0.117
N2 Nitrogen diatomic rNN 1.213 1.095 -0.117
Na2 Sodium diatomic rNaNa 3.079 3.165 0.086
CuCl Copper monochloride rCuCl 2.051 2.110 0.059
Cu2 Copper diatomic rCuCu 2.220 2.273 0.053
CaCl calcium monochloride rClCa 2.437 2.490 0.053
6 molecules.