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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 SiC atoms 1 and 2

For SiC (silicon monocarbide)
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) 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 cc-pCVTZ
Moller Plesset perturbation MP2=FULL -0.0001 -0.0000 0.0012 0.0001 -0.0120 0.0022 0.0021 -0.0115 0.0015 0.0063 0.0015 0.0011 0.0071 0.0097 0.0022 0.0158 0.0121 0.0085 0.0117 0.0057
MP3=FULL         0.0047   -0.0002       0.0011 0.0007 0.0062             0.0041
MP4=FULL   -0.0001     0.0022       0.0012     0.0012 0.0075   0.0025 0.0110       0.0050
B2PLYP=FULL -0.0001 -0.0000 0.0004 0.0000 0.0006 0.0006 0.0006 0.0004 0.0004 0.0018 0.0005 0.0003 -0.0050   0.0006 0.0029       0.0011
Coupled Cluster CCSD=FULL         0.0018           0.0015 0.0009 0.0068 0.0086 0.0018 0.0097 0.0108     0.0046
CCSD(T)=FULL         0.0019           0.0013 0.0011 0.0070 0.0091 0.0021 0.0100 0.0113 0.0094 0.0125 0.0049
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 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 cc-pCVTZ

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