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

For LiS+ (Lithium sulfide 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 aug-cc-pV(T+d)Z cc-pCVTZ
Moller Plesset perturbation MP2=FULL -0.000686 -0.005315 -0.012954 -0.003234 -0.010935 -0.010935 -0.011630   -0.132928 -0.021273 -0.040789 -0.006518 -0.045629 -0.074023 -0.007598 -0.047809 -0.075390 -0.112971 -0.341495
MP3=FULL         -0.010412   -0.011096       -0.041899 -0.006009 -0.046421         -0.113415 -0.343065
MP4=FULL   -0.005089     -0.010444       -0.134631     -0.006068 -0.047296   -0.007139 -0.049564   -0.114614 -0.344837
B2PLYP=FULL -0.000229 -0.001641 -0.003950 -0.000998 -0.003333 -0.003333 -0.003544 -0.038457 -0.038457 -0.006471 -0.012138 -0.002008 -0.013745   -0.002350 -0.014395   -0.033338 -0.097788
Quadratic configuration interaction QCISD(T)=FULL         -0.010425             -0.006062 -0.047308   -0.007130 -0.049570      
QCISD(TQ)=FULL         -0.010412   -0.011108         -0.006044 -0.047208 -0.076271 -0.007102 -0.049465 -0.077757 -0.113390 -0.344488
Coupled Cluster CCSD=FULL         -0.010237         -0.019693 -0.042092 -0.005891 -0.046560 -0.075291 -0.006931 -0.048798 -0.076769 -0.113275 -0.342263
CCSD(T)=FULL         -0.010423           -0.042538 -0.006059 -0.047289 -0.076384 -0.007124 -0.049550 -0.077870 -0.114492 -0.344627
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 aug-cc-pV(T+d)Z cc-pCVTZ