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Energy differences between frozen core and all electrons correlated.
MP2, MP3, MP4, B2PLYP, CCSD, and CCSD(T)

For SF- (sulfur monofluoride anion)

Energies in Hartree
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) cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.000208 -0.007032 -0.014671 -0.004139 -0.012838 -0.012838 -0.013919 -0.139125 -0.139125 -0.025515 -0.008509 -0.046822 -0.090006 -0.090753
MP3=FULL         -0.011939   -0.050091              
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVQZ