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

For CF3OH (trifluoromethanol)

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 aug-cc-pVDZ aug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.000573 -0.009118 -0.009118 -0.005613 -0.014937 -0.015089 -0.016572 -0.094254 -0.094379 -0.032966 -0.085361 -0.011106 -0.067511 -0.013363 -0.077225
MP3=FULL         -0.014065                    
MP4=FULL   -0.008474     -0.014252       -0.096062     -0.010245 -0.065932 -0.012506  
Coupled Cluster CCSD=FULL         -0.013995           -0.087259 -0.010072 -0.066965 -0.012288  
CCSD(T)=FULL         -0.014150           -0.087648 -0.010183 -0.067502 -0.012423 -0.077870
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 aug-cc-pVDZ aug-cc-pVTZ