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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+ (clorine monofluoride cation)
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(T+d)Z daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.0825 0.0001 0.0000 0.0001 -0.0145 0.0018 0.0018 -0.0194 0.0003 0.0042 0.0014 0.0005 0.0015 0.0007 0.0019 0.0021 0.0017 0.0030 0.0027 0.0018 0.0019 0.0043
MP3=FULL         0.0226   0.0004       0.0016 0.0005 0.0017 0.0009 0.0018           0.0021 0.0047
MP4=FULL   0.0000     0.0019       0.0003   0.0017   0.0017 0.0008 0.0017   0.0017 0.0032     0.0019 0.0047
B2PLYP=FULL 0.0000 0.0000 0.0001 0.0001 0.0008 0.0006 0.0009 0.0001 -0.0000 0.0014 0.0004 0.0001 0.0005 0.0002 -0.0176   0.0005 0.0009     0.0006 0.0014
Quadratic configuration interaction QCISD(T)=FULL         0.0021           0.0018   0.0018 0.0008 0.0019   0.0021 0.0035     0.0023 0.0053
Coupled Cluster CCSD=FULL         0.0023         0.0050 0.0024 0.0007 0.0025 0.0010 0.0021 0.0028 0.0021 0.0036 0.0031   0.0023 0.0051
CCSD(T)=FULL         -0.1247           0.0018 0.0005 0.0018 0.0009 0.0019 0.0024 0.0019 0.0034 0.0031   0.0022 0.0051
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(T+d)Z daug-cc-pVDZ daug-cc-pVTZ

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