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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 GaH atoms 1 and 2

For GaH (Gallium monohydride)
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 daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.0093 0.0010 0.0006 0.0028 0.0039 0.0097 0.0097 0.0153 0.0249 0.0181 0.0229 0.0007 0.0012 0.0114 0.0234 0.0051 0.0152 0.0352 0.0061 0.0137
MP4=FULL   0.0011     0.0036       0.0257       0.0014 0.0128   0.0056 0.0162      
B2PLYP=FULL -0.0025 0.0005 0.0002 0.0014 0.0016 0.0032 0.0032 0.0055 0.0088 0.0069 0.0081 0.0001 0.0004 0.0047   0.0017 0.0053   0.0020 0.0051
Quadratic configuration interaction QCISD(T)=FULL         0.0031           0.0163   0.0016 0.0108   0.0050 0.0131   0.0054 0.0115
Coupled Cluster CCSD=FULL         0.0029         0.0163 0.0160 -0.0012 0.0008 0.0101 0.0208 0.0045 0.0124 0.0314 0.0045 0.0115
CCSD(T)=FULL         0.0030           0.0162 -0.0015 0.0015 0.0108 0.0209 0.0049 0.0131 0.0319 0.0053 0.0116
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 daug-cc-pVDZ daug-cc-pVTZ

gahq1.gif