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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 BP atoms 1 and 2

For BP (Boron monophosphide)
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 0.0002 0.0001 0.0007 0.0001 0.0023 0.0023 0.0024 0.0010 0.0010 0.0070 0.0009 0.0016 0.0076 0.0052 0.0022 0.0111 0.0057
MP3=FULL         0.0022   0.0023       0.0009 0.0017 0.0077        
MP4=FULL   -0.0000     0.0025       0.0010     0.0018 0.0091   0.0026 0.0138  
B2PLYP=FULL 0.0000 0.0000 0.0003 0.0001 0.0008 0.0008 0.0008 0.0003 0.0003 0.0024 0.0003 0.0005 0.0023   0.0007 0.0033  
Quadratic configuration interaction QCISD(T)=FULL         0.0026             0.0020 0.0085   0.0028 0.0124  
Coupled Cluster CCSD=FULL         0.0025         0.0082 0.0014 0.0024 0.0085 0.0062 0.0026 0.0122 0.0068
CCSD(T)=FULL         0.0025           0.0015 0.0020 0.0084 0.0058 0.0027 0.0122 0.0065
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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