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

For H2S- (Hydrogen sulfide 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) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.000291 -0.005149 -0.012763 -0.003052 -0.010324 -0.010674   -0.119923 -0.120484 -0.019632 -0.028297 -0.006834 -0.034885 -0.059119 -0.008450 -0.016381 -0.060420
MP3=FULL         -0.009730   -0.027062                    
MP4=FULL   -0.004763     -0.009701       -0.119865     -0.006223 -0.034300   -0.007876 -0.038428  
Coupled Cluster CCSD=FULL         -0.009464           -0.027369 -0.006020 -0.033392 -0.057564 -0.007586 -0.037485 -0.058893
CCSD(T)=FULL         -0.009693           -0.027874 -0.006221 -0.034190 -0.058755 -0.007843 -0.038315 -0.060091
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ