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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 BrO- atoms 1 and 2

For BrO- (Bromine monoxide 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) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.0000 0.0004 0.0005 0.0021 0.0025 0.0025 0.0030 -0.0020 -0.0008 0.0098 0.0010 0.0015 0.0041 0.0036 0.0025 0.0074 0.0049
MP4=FULL   0.0003     0.0038       -0.0002     0.0014 0.0038   0.0026 0.0077  
Coupled Cluster CCSD=FULL         0.0042           0.0014 0.0018 0.0049 0.0042 0.0030 0.0090 0.0059
CCSD(T)=FULL         0.0045           0.0015 0.0018 0.0053 0.0043 0.0032 0.0093 0.0057
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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