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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 CaS atoms 1 and 2

For CaS (Calcium sulfide)
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) 6-311+G(3df,2p) TZVP Def2TZVPP cc-pVDZ cc-pVTZ cc-pV(D+d)Z cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ
Moller Plesset perturbation MP2=FULL -0.0001 -0.0001 0.0015 -0.0000 0.0004 0.0004 0.0002 0.0008 0.0008 0.0018 0.0035 0.0036 0.0341 0.0242 0.0341 0.0258 0.0357 0.0177 0.0527
MP3=FULL         0.0002   -0.0001       0.0023 0.0025 0.0225 0.0192 0.0229 0.0200 0.0238 0.0078 0.0363
MP4=FULL   0.0012     0.0000       0.0004   0.0032   0.0238 0.0167 0.0219 0.0181 0.0235 0.0031 0.0407
B2PLYP=FULL -0.0002 0.0000 0.0009 -0.0000 0.0002 0.0002 0.0001 0.0002 0.0002 0.0005 0.0009 0.0016 0.0097 0.0072 0.0097 0.0076 0.0101 0.0047 0.0151
Quadratic configuration interaction QCISD(T)=FULL         0.0005           0.0029   0.0194 0.0153 0.0196 0.0162 0.0203 0.0027 0.0353
Coupled Cluster CCSD=FULL         0.0008         0.0018 0.0033 0.0072 0.0214 0.0168 0.0213 0.0180 0.0224 0.0063 0.0357
CCSD(T)=FULL         0.0006           0.0031 0.0057 0.0208 0.0143 0.0203 0.0148 0.0214 0.0029 0.0371
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP Def2TZVPP cc-pVDZ cc-pVTZ cc-pV(D+d)Z cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ

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