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Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology |
You are here: Comparisons > Energy > Similar molecules > Isomers OR FAQ Help > List > Similar molecules > Isomers |
index | Species | CAS number | Name | Relative experimental enthalpy (kJ mol-1) | sketch |
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a | H2OCH3OH | 77 | water methanol dimer | ![]() |
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b | CH3OHH2O | 88 | methanol water dimer | ![]() |
composite | G4 | 0.0 a -3.8 b |
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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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | aug-cc-pVTZ | ||
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hartree fock | HF | 0.0 a -1.4 b |
0.0 a -0.9 b |
0.0 a 0.5 b |
0.0 a 0.3 b |
0.0 a 0.2 b |
0.0 a 0.2 b |
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density functional | B1B95 | 0.0 a -12.5 b |
0.0 a -2.1 b |
0.0 a -2.1 b |
0.0 a -0.1 b |
0.0 a -3.4 b |
0.0 a -3.6 b |
0.0 a 0.2 b |
0.0 a -3.8 b |
0.0 a -2.8 b |
0.0 a -4.0 b |
0.0 a -4.0 b |
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B3LYP | 0.0 a -2.3 b |
0.0 a -3.0 b |
0.0 a 1.0 b |
0.0 a -3.3 b |
0.0 a 0.9 b |
0.0 a 0.3 b |
0.0 a 0.7 b |
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B3LYPultrafine | 0.0 a -2.3 b |
0.0 a -2.9 b |
0.0 a 1.0 b |
0.0 a 1.0 b |
0.0 a 1.0 b |
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M06-2X | 0.0 a 0.1 b |
0.0 a 0.0 b |
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PBEPBE | 0.0 a -3.4 b |
0.0 a -2.8 b |
0.0 a 0.8 b |
0.0 a 0.6 b |
0.0 a 0.6 b |
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PBEPBEultrafine | 0.0 a -3.4 b |
0.0 a -2.7 b |
0.0 a 0.8 b |
0.0 a 0.7 b |
0.0 a 0.7 b |
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PBE1PBE | 0.0 a -2.9 b |
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HSEh1PBE | 0.0 a -2.0 b |
0.0 a -2.8 b |
0.0 a 0.6 b |
0.0 a -1.7 b |
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TPSSh | 0.0 a -3.0 b |
0.0 a 1.1 b |
0.0 a -3.0 b |
0.0 a -0.9 b |
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wB97X-D | 0.0 a 0.1 b |
0.0 a -1.3 b |
0.0 a -0.2 b |
0.0 a 0.1 b |
0.0 a -0.7 b |
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B97D3 | 0.0 a -3.4 b |
0.0 a 1.5 b |
0.0 a -1.6 b |
0.0 a 1.5 b |
0.0 a 0.9 b |
0.0 a -1.0 b |
0.0 a 1.2 b |
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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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | aug-cc-pVTZ | ||
Moller Plesset perturbation | MP2 | 0.0 a -3.5 b |
0.0 a -0.4 b |
0.0 a 1.5 b |
0.0 a -1.8 b |
0.0 a 1.8 b |
0.0 a 1.3 b |
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MP3 | 0.0 a -0.7 b |
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MP3=FULL | 0.0 a -0.5 b |
0.0 a 1.0 b |
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B2PLYP | 0.0 a -1.7 b |
0.0 a -1.0 b |
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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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | aug-cc-pVTZ | ||
Quadratic configuration interaction | QCISD | 0.0 a -2.8 b |
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Coupled Cluster | CCD | 0.0 a -2.8 b |
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CCSD(T) | 0.0 a 1421.8 b |
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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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | aug-cc-pVTZ |
CEP-31G | CEP-31G* | CEP-121G | CEP-121G* | LANL2DZ | SDD | cc-pVTZ-PP | aug-cc-pVTZ-PP | Def2TZVPP | ||
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hartree fock | HF | 0.0 a -0.2 b |
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density functional | B1B95 | 0.0 a -1.0 b |
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B3LYP | 0.0 a -0.0 b |
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PBEPBE | 0.0 a -0.7 b |
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Moller Plesset perturbation | MP2 | 0.0 a 0.9 b |