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Bond Length differences between CCSD(T)=FULL (all electrons correlated) and CCSD(T) (frozen core)

For OH atoms 1 and 2

For OH (Hydroxyl radical)
Bond length differences (full - frozen) in Å
Methods with standard basis sets
6-31G* cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pCVDZ cc-pCVTZ
Coupled Cluster CCSD(T)=FULL -0.0004 -0.0007 -0.0020 -0.0016 -0.0007 -0.0034 -0.0014 -0.0005 -0.0007