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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 HS- atoms 1 and 2

For HS- (mercapto anion)
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-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pV(T+d)Z
Moller Plesset perturbation MP2=FULL 0.0000 -0.0002 0.0000 -0.0001 0.0001 0.0011 0.0012 -0.0002 0.0006 0.0024 0.0015 -0.0000 0.0029 0.0015 0.0038 0.0020 0.0016 0.0053 0.0023 0.0036
MP3=FULL         0.0000   0.0024       0.0017 -0.0002 0.0024 0.0015 0.0031          
MP4=FULL   -0.0002     0.0000       0.0004   0.0013   0.0026 0.0016 0.0030   0.0017 0.0048    
B2PLYP=FULL 0.0000 0.0043 0.0000 -0.0000 0.0000 0.0003 0.0004 -0.0001 0.0001 0.0007 0.0008 0.0000 0.0013 0.0005 0.0009   0.0005 0.0015    
Quadratic configuration interaction QCISD(T)=FULL         0.0001           0.0014   0.0023 0.0016 0.0033   0.0017 0.0052    
Coupled Cluster CCSD=FULL         0.0001         0.0025 0.0021 0.0000 0.0024 0.0015 0.0033 0.0015 0.0017 0.0052 0.0023  
CCSD(T)=FULL         0.0000           0.0014 -0.0001 0.0022 0.0016 0.0033 0.0020 0.0017 0.0052 0.0018  
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-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pV(T+d)Z

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