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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 AsO atoms 1 and 2

For AsO (Arsenic monoxide)
Bond length differences (full - frozen) in Å. Mouse over a difference for the bond length with full correlation.
Methods with standard basis sets
6-31G* cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ
Coupled Cluster CCSD(T)=FULL 0.0100 0.0007 0.0034 0.0011 0.0057
6-31G* cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ

aso.gif