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

For AlH atoms 1 and 2

For AlH (aluminum monohydride)
Bond length differences (full - frozen) in Å
Methods with standard basis sets
cc-pV(D+d)Z cc-pV(T+d)Z
Coupled Cluster CCSD(T)=FULL -0.0005 -0.0021