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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 NaH atoms 1 and 2

For NaH (sodium hydride)
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** TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pCVTZ
Moller Plesset perturbation MP2=FULL 0.0018 -0.0010 0.0002 -0.0013 -0.0002 0.0016 0.0016 0.0076 0.0074 0.0114 0.0011 0.0078 0.1495 0.0222 0.0423 0.3504 0.0272
MP3=FULL         0.0028   0.0016                   0.0255
MP4=FULL   -0.0012     0.0014       0.0073   0.0028 0.0089   0.0236 0.0467   0.0266
B2PLYP=FULL                                 0.0088
Coupled Cluster CCSD=FULL         0.0015         0.0105 0.0020 0.0077 0.1633 0.0237 0.0454 0.3583 0.0234
CCSD(T)=FULL   -0.0007       0.0023 0.0024 0.0058   0.0100 0.0020 0.0075 0.1659 0.0244 0.0472 0.3609 0.0249
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pCVTZ

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