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

For SiF3+ (Silicon trifluoride cation)

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 -0.003214 -0.011993 -0.018528 -0.007775 -0.019241 -0.019241 -0.021897 -0.179555 -0.179555 -0.041231 -0.084408 -0.014188 -0.096059 -0.139627 -0.017219 -0.104805 -0.147507
MP3=FULL         -0.018555   -0.021232       -0.085469 -0.013445 -0.095858        
MP4=FULL   -0.011383     -0.019034       -0.181015     -0.013593 -0.097326   -0.016741 -0.106338  
B2PLYP=FULL -0.001041 -0.003630 -0.005661 -0.002356 -0.005816 -0.005816 -0.006599 -0.051865 -0.051865 -0.012384 -0.024369 -0.004271 -0.028345   -0.005178 -0.030857  
Quadratic configuration interaction QCISD(T)=FULL         -0.018997             -0.013599 -0.097293   -0.016730 -0.106345  
Coupled Cluster CCSD=FULL         -0.018590         -0.040970 -0.085533 -0.013330 -0.095914   -0.016387 -0.104997  
CCSD(T)=FULL         -0.018999           -0.086385 -0.013616 -0.097293   -0.016742 -0.106350  
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