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Bond Length differences between FULL (all electrons correlated) and FROZEN core

Such as MP2=Frozen and MP2=Full
17 10 27 16 27

For LiC atoms 1 and 2

For LiC (Lithium Carbide)
Bond length differences (full - frozen) in Å. Mouse over a difference for the bond length with full correlation.
Methods with standard basis sets
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL 0.0003 0.0006 0.0006 0.0017 0.0067 0.0079 0.0101 0.0116 0.0072 0.0139 0.0034 0.0089 0.0173 0.0197 0.0373 0.0265 0.0291
MP4=FULL   0.0007     0.0082       0.0073     0.0090 0.0182   0.0452 0.0287  
Coupled Cluster CCSD=FULL         0.0081           0.0032 0.0087 0.0180 0.0209 0.0440 0.0278 0.0314
CCSD(T)=FULL         0.0080           0.0035 0.0089 0.0182 0.0208 0.0452 0.0276 0.0327
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ

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