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

For CS3-- (Carbonotrithioate)

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) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ cc-pV(T+d)Z cc-pCVTZ
Moller Plesset perturbation MP2=FULL -0.001237 -0.017281 -0.040666 -0.010779 -0.037202 -0.037202 -0.039392 -0.379855 -0.379855 -0.071825 -0.521588 -0.102137 -0.022334 -0.118098 -0.025781 -0.128221 -0.314519 -1.039663
MP3=FULL         -0.034548   -0.036641       -0.512015 -0.100048 -0.019764 -0.113541     -0.307290 -1.037759
MP4=FULL   -0.016137     -0.035277       -0.378860   -0.518199   -0.020368 -0.116632 -0.023953 -0.127012 -0.312623 -1.045431
B2PLYP=FULL -0.000401 -0.005306 -0.012356 -0.003300 -0.011231 -0.011231 -0.011895 -0.109440 -0.109440 -0.021504 -0.150957 -0.030099 -0.006825 -0.035275 -0.007860 -0.038162 -0.092324 -0.296930
Quadratic configuration interaction QCISD(T)=FULL         -0.035040           -0.516790   -0.020218 -0.116012 -0.023665 -0.126280 -0.311415 -1.043641
Coupled Cluster CCSD=FULL         -0.034228         -0.065447 -0.511577 -0.099891 -0.019552 -0.113396 -0.022836 -0.123536 -0.307175 -1.035388
CCSD(T)=FULL         -0.035038           -0.516733 -0.101616 -0.020213 -0.115953 -0.023629 -0.126205 -0.311345 -1.043585
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ cc-pV(T+d)Z cc-pCVTZ