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

For AsF3H+ (Arsenic trifluoride, protonated)

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 -0.000740 -0.010092 -0.017299 -0.018026 -0.045307 -0.046158 -0.049738 -0.433728 -0.434253 -0.134288 -0.497416 -0.153132 -0.018373 -0.098004 -0.177253 -0.023919 -0.113799 -0.190835
MP3=FULL         -0.043475   -0.047756       -0.449537 -0.135827 -0.016584 -0.089242        
MP4=FULL         -0.045489       -0.418917       -0.017412 -0.095612   -0.022907 -0.110867  
B2PLYP=FULL -0.000262 -0.002994 -0.005273 -0.005489 -0.014321 -0.014577 -0.015665 -0.128616 -0.128776 -0.041964 -0.147486 -0.045000 -0.005591 -0.029009   -0.007264 -0.033520  
Quadratic configuration interaction QCISD(T)=FULL         -0.045371           -0.471105   -0.017263 -0.093440   -0.022679 -0.108379  
Coupled Cluster CCSD=FULL         -0.044104         -0.127066 -0.465006 -0.141090 -0.016690 -0.091219 -0.168913 -0.021953 -0.106160  
CCSD(T)=FULL         -0.045384           -0.470914 -0.143627 -0.017275 -0.093390   -0.022689 -0.108335  
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