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

For Sc+ (Scandium 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 0.017838 -0.135508 -0.135508 -0.142917 -0.182646 -0.182646 -0.199270 -0.363596 -0.363596 -0.210775 -0.193514 -0.152246 -0.234909 -0.291956 -0.159022 -0.254261 -0.292338
MP3=FULL         -0.200176   -0.216965       -0.209265 -0.165734 -0.252604        
MP4=FULL   -0.151262     -0.204524       -0.383443     -0.168900 -0.258426   -0.175932 -0.275844  
B2PLYP=FULL -0.003156 -0.043718 -0.043718 -0.046283 -0.058607 -0.058607 -0.063742 -0.111312 -0.111312 -0.066964 -0.062099 -0.049383 -0.075019   -0.051500 -0.080542  
Quadratic configuration interaction QCISD(T)=FULL         -0.205096             -0.169283 -0.259021   -0.176316 -0.276405  
QCISD(TQ)=FULL             -0.222537             -0.320291     -0.320643
Coupled Cluster CCSD=FULL         -0.201507           -0.210099 -0.166912 -0.253399 -0.311871 -0.173782 -0.270581 -0.312210
CCSD(T)=FULL         -0.205073           -0.213294 -0.169237 -0.258970 -0.319983 -0.176266 -0.276352 -0.320337
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