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

For CH3CHCH3 (Isopropyl radical)

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 cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.001298 -0.004845 -0.004845 -0.003878 -0.013918 -0.015156 -0.015344 -0.055405 -0.056375 -0.023533 -0.065739 -0.050887 -0.007743 -0.047035 -0.084695 -0.008725 -0.055335 -0.086748
MP4=FULL   -0.004662     -0.013855       -0.058991   -0.069053   -0.007318 -0.048863   -0.008297 -0.057925  
B2PLYP=FULL -0.000395 -0.001453 -0.001453 -0.001160 -0.004120 -0.004474 -0.004530 -0.015865 -0.016158 -0.006854 -0.018923 -0.014591 -0.002311 -0.013646   -0.002604 -0.016014  
Quadratic configuration interaction QCISD(T)=FULL         -0.013823           -0.068952   -0.007278 -0.048753   -0.008251    
Coupled Cluster CCSD=FULL         -0.013674         -0.023589 -0.068626 -0.053339 -0.007171 -0.048317   -0.008132 -0.057321  
CCSD(T)=FULL         -0.013827           -0.048693 -0.053661 -0.007278 -0.048753 -0.087322 -0.008252    
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 cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ