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

For SiBr4 (Silicon tetrabromide)

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 -0.003940 -0.019290 -0.056912 -0.046203 -0.123946 -0.123946 -0.127310 -1.703979 -1.703979 -0.362044 -0.296796 -0.039589 -0.247540    
MP3=FULL         -0.115795   -0.119069       -0.253008 -0.034798 -0.220993    
B2PLYP=FULL -0.001294 -0.005929 -0.017466 -0.013631 -0.038044 -0.038044 -0.039050 -0.500235 -0.500235 -0.111506 -0.088443 -0.012256 -0.074392 -0.015767 -0.081082
Quadratic configuration interaction QCISD(T)=FULL         -0.119250             -0.037069      
Coupled Cluster CCSD=FULL         -0.116529           -0.263825 -0.035283 -0.227286    
CCSD(T)=FULL         -0.119160           -0.271556 -0.037033      
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