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

For AlN atoms 1 and 2

For AlN (Aluminum nitride)
Bond length differences (full - frozen) in Å
Methods with standard basis sets
6-31G* cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ cc-pV(D+d)Z cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ
Coupled Cluster CCSD(T)=FULL -0.0003 -0.0010 -0.0047 -0.0013 -0.0090 -0.0003 -0.0058 0.0010 -0.0034