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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 |
|---|---|---|---|---|---|
| a | CH2CH2Cl | 16519996 | 2-chloroethyl radical | ![]() |
|
| b | CHClCH3 | 16520131 | 1-chloroethyl radical | ![]() |
| semi-empirical | AM1 | 167.9 a |
|---|---|---|
| PM3 | 180.9 a | |
| PM6 | 165.9 a | |
| composite | G1 | NC NC |
| G2MP2 | NC NC |
|
| G2 | NC NC |
|
| G3 | NC NC |
|
| G3B3 | NC NC |
|
| G4 | NC NC |
|
| CBS-Q | NC NC |
| 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 | aug-cc-pVDZ | aug-cc-pVTZ | daug-cc-pVTZ | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
| ROHF | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||||
| density functional | LSDA | NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|
| BLYP | NC NC |
NC NC |
NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| B1B95 | NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| B3LYP | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| B3LYPultrafine | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|||||||
| B3PW91 | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| mPW1PW91 | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| M06-2X | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC | NC NC |
NC NC |
NC NC |
|||
| PBEPBE | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| PBEPBEultrafine | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|||||||
| PBE1PBE | NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| HSEh1PBE | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| TPSSh | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| wB97X-D | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| B97D3 | NC NC |
NC |
NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| 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 | aug-cc-pVDZ | aug-cc-pVTZ | daug-cc-pVTZ | ||
| Moller Plesset perturbation | MP2 | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|
| MP2=FULL | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| ROMP2 | NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC | NC NC |
NC NC |
NC NC |
NC | NC NC |
|||
| MP3 | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||||||||||||
| MP3=FULL | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||||
| MP4 | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC | NC NC |
NC | |||||||||
| MP4=FULL | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC | NC NC |
NC | ||||||||||
| B2PLYP | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| B2PLYP=FULL | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||
| Configuration interaction | CID | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|||||||||||
| CISD | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
||||||||||||
| 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 | aug-cc-pVDZ | aug-cc-pVTZ | daug-cc-pVTZ | ||
| Quadratic configuration interaction | QCISD | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC |
|||
| QCISD(T) | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC | ||||||||||
| QCISD(T)=FULL | NC NC |
NC NC |
NC NC |
NC NC |
NC | NC NC |
||||||||||||
| Coupled Cluster | CCD | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|||
| CCSD | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
|||||||||||
| CCSD=FULL | NC NC |
NC NC |
NC |
NC NC |
NC NC |
NC NC |
NC NC |
|||||||||||
| CCSD(T) | NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC NC |
NC | NC NC |
NC NC |
NC | NC NC |
|||||||
| CCSD(T)=FULL | NC NC |
NC |
NC | NC NC |
NC | NC | ||||||||||||
| 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 | aug-cc-pVDZ | aug-cc-pVTZ | daug-cc-pVTZ |
| CEP-31G | CEP-31G* | CEP-121G | CEP-121G* | LANL2DZ | SDD | cc-pVTZ-PP | aug-cc-pVTZ-PP | Def2TZVPP | ||
|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | -73106.6 a -73099.4 b |
-73234.1 a -73240.4 b |
-73122.8 a -73115.5 b |
-73252.2 a -73258.8 b |
NC NC |
NC NC |
NC NC |
||
| density functional | B3LYP | -74813.0 a -74807.5 b |
-74887.8 a -74899.7 b |
-74830.2 a -74825.3 b |
-74909.9 a -74922.2 b |
NC NC |
NC NC |
NC NC |
||
| PBEPBE | NC NC |
|||||||||
| wB97X-D | -74827.4 a -74829.1 b |
-74909.8 a -74926.5 b |
-74844.1 a -74845.7 b |
-74930.1 a -74946.9 b |
NC NC |
NC NC |
||||
| Moller Plesset perturbation | MP2 | -73569.2 a -73565.1 b |
-74164.5 a -74176.3 b |
-73650.8 a -73645.5 b |
-74250.9 a -74262.8 b |
NC NC |
NC NC |
NC NC |