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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 NCl atoms 1 and 2

For NCl (nitrogen monochloride)
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 aug-cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ
Moller Plesset perturbation MP2=FULL 0.0001 -0.0003 0.0001 -0.0002 0.0341 0.0019 0.0018 0.0377 0.0010 0.0049 0.0047 0.0007 0.0388 0.0017 0.0043 0.0036 0.0020 -0.0156 0.0050 0.0018 0.0053 0.0068 0.0016  
MP3=FULL         -0.0298   0.0033       0.0047 0.0009 0.0035 0.0015 0.0048         0.0019 0.0050 0.0071 0.0015 0.0046
MP4=FULL   -0.0002     0.0019       0.0003   0.0048   0.0032 0.0016 0.0051   0.0023 0.0065   0.0021 0.0056 0.0074 0.0010 0.0047
B2PLYP=FULL 0.0000 -0.0001 0.0000 -0.0000 0.0006 0.0007 0.0006 0.0004 0.0003 0.0019 0.0014 0.0003 0.0010 0.0005 0.0299   0.0007 0.0018   0.0005 0.0015 0.0020 0.0000 0.0045
Coupled Cluster CCSD=FULL         0.0023         0.0066 0.0051 0.0013 0.0041 0.0017 0.0052 0.0050 0.0024 0.0066 0.0055 0.0023 0.0058 0.0069 0.0020 0.0058
CCSD(T)=FULL                               0.0041       0.0022 0.0056      
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 aug-cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ

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