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You are here: Calculated > Energy > Correlation > Full vs Frozen core energies

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

For LiH- (lithium hydride anion)

Energies in Hartree
Methods with standard basis sets
6-31G* 6-31+G** aug-cc-pVTZ cc-pV(T+d)Z
Moller Plesset perturbation MP2=FULL     -0.013229 -0.012091
MP3=FULL -0.000608 -0.013007    
Coupled Cluster CCSD(T)=FULL       -0.014278
6-31G* 6-31+G** aug-cc-pVTZ cc-pV(T+d)Z