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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 GeO+ atoms 1 and 2

For GeO+ (Germanium monoxide cation)
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 0.0030 0.0012 -0.0003 0.0052 0.0109 0.0109 0.0118 0.0139 0.0139 0.0173 -0.0003 0.0006 0.0042 0.0099 0.0009 0.0059 0.0134
MP3=FULL         0.0098   0.0101       -0.0012 0.0004 0.0024        
MP4=FULL   0.0014     0.0119       0.0140     0.0008 0.0041   0.0012 0.0065  
B2PLYP=FULL 0.0007 0.0004 -0.0001 0.0027 0.0049 0.0049 0.0050 0.0053 0.0053 0.0059 -0.0002 0.0002 0.0011   0.0003 0.0017  
Quadratic configuration interaction QCISD(T)=FULL         0.0112             0.0006 0.0028   0.0008 0.0047  
Coupled Cluster CCSD=FULL         0.0100         0.0143 -0.0010 0.0004 0.0026 0.0073 0.0003 0.0044 0.0100
CCSD(T)=FULL         0.0110           -0.0010 0.0005 0.0027 0.0075 0.0008 0.0045 0.0110
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

geoq1.gif