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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 SiS atoms 1 and 2

For SiS (silicon monosulfide)
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 cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ cc-pV(T+d)Z aug-cc-pV(T+d)Z daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.0000 -0.0007 0.0021 -0.0003 0.0021 0.0021 0.0021 0.0004 0.0004 0.0077 0.0039 -0.0004 0.0017 0.0044 0.0055 0.0021 0.0075 0.0064 0.0067 0.0104 0.0025 0.0078
MP3=FULL         0.0040   0.0013                         0.0084    
MP4=FULL                                       0.0097    
B2PLYP=FULL -0.0000 -0.0002 0.0006 -0.0001 0.0007 0.0007 0.0007 0.0001 0.0001 0.0024 0.0011 -0.0001 0.0006 0.0013   0.0007 0.0014     0.0030 0.0008 0.0020
Quadratic configuration interaction QCISD(T)=FULL         0.0025           0.0034   0.0019 0.0042   0.0023 0.0082     0.0094 0.0028 0.0082
Coupled Cluster CCSD=FULL         -0.0032         0.0071 0.0034 -0.0004 0.0017 0.0039 0.0049 0.0020 0.0074 0.0057   0.0093 0.0024 0.0077
CCSD(T)=FULL         0.0024 0.0024   0.0004 0.0002   0.0003 -0.0005 0.0020 0.0048 0.0049 0.0025 0.0080 0.0058   0.0098 0.0027 0.0080
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 cc-pV(T+d)Z aug-cc-pV(T+d)Z daug-cc-pVDZ daug-cc-pVTZ

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