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

For HCF (Fluoromethylene)

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 daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.000330 -0.003388 -0.003388 -0.002243 -0.006401 -0.006548 -0.007048 -0.036657 -0.036799 -0.010412 -0.043931 -0.033349 -0.004054 -0.025324 -0.057475 -0.004720 -0.029242 -0.058357 -0.004890 -0.030878
MP3=FULL         -0.006139   -0.020254       -0.045155 -0.034435 -0.003732 -0.025418         -0.004568 -0.031428
MP4=FULL   -0.003137     -0.006164       -0.037720   -0.045274   -0.003704 -0.025416   -0.004357 -0.029609   -0.004521 -0.031375
B2PLYP=FULL -0.000098 -0.000993 -0.000996 -0.000659 -0.001879 -0.001920 -0.002064 -0.010365 -0.010409 -0.003016 -0.012471 -0.009443 -0.001184 -0.007287   -0.001381 -0.008392   -0.001431 -0.008856
Quadratic configuration interaction QCISD(T)=FULL         -0.006104           -0.045223   -0.003659 -0.025365   -0.004310 -0.029562   -0.004474 -0.031332
QCISD(TQ)=FULL         -0.006105   -0.006742       -0.045240   -0.003656 -0.025385 -0.059331 -0.004309 -0.029594 -0.060264 -0.004473 -0.031335
Coupled Cluster CCSD=FULL         -0.006021         -0.010009 -0.044825 -0.034294 -0.003605 -0.025116 -0.058771 -0.004248 -0.029318 -0.059685 -0.004411 -0.031089
CCSD(T)=FULL         -0.006108           -0.045224 -0.034489 -0.003661 -0.025373 -0.059313 -0.004312 -0.029575 -0.060230 -0.004477 -0.031347
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 daug-cc-pVDZ daug-cc-pVTZ