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

For AsH (Arsenic monohydride)


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) cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.000230 -0.003521 -0.010330 -0.011604 -0.033284 -0.033920 -0.034558 -0.383967 -0.384557 -0.100687 -0.009232 -0.052096 -0.076827 -0.010969 -0.055923 -0.079278
MP3=FULL         -0.031812   -0.047781                  
Coupled Cluster CCSD(T)=FULL         -0.033118           -0.004793 -0.048204 -0.069851 -0.010477 -0.051686 -0.071954
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ