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Bond Length differences between FULL (all electrons correlated) and FROZEN core

Such as MP2=Frozen and MP2=Full
17 10 27 16 27

For ClF atoms 1 and 2

For ClF (Chlorine monofluoride)
Bond length differences (full - frozen) in Å. Mouse over a difference for the bond length with full correlation.
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 Def2TZVPP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pV(D+d)Z cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ
Moller Plesset perturbation MP2=FULL 0.0000 -0.0001 0.0002 0.0002 0.0014 0.0020 0.0021 -0.0234 0.0006 0.0033 0.0019 0.0006 -0.0046 0.0005 0.0013 0.0027 0.0018 0.0024 0.0033   0.0024 0.0009 0.0018
MP3=FULL         0.0156   -0.0005       0.0019 0.0005 0.0017 0.0007 0.0020             0.0011 0.0019
MP4=FULL   -0.0000     0.0021       0.0008   0.0022   0.0011 0.0008 0.0023   0.0021 0.0043       0.0011 0.0015
B2PLYP=FULL 0.0000 0.0004 0.0001 0.0000 -0.0152 0.0006 0.0006 0.0002 0.0003 -0.0087 0.0005 0.0002 0.0003 0.0002 -0.0102   0.0006 -0.0104       0.0003 0.0000
Coupled Cluster CCSD=FULL         0.0015         0.0035 0.0024 0.0009 0.0022 0.0008 0.0015 0.0032 0.0020 0.0026 0.0038     0.0019 0.0026
CCSD(T)=FULL         0.0028           0.0022 0.0008 0.0023 0.0008 0.0026 0.0028 0.0020 0.0042 0.0043 0.0010 0.0024 0.0013 0.0018
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 Def2TZVPP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pV(D+d)Z cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ

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