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Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology |
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Experimental bond length is 1.967 Å
| Display Options |
|---|
| semi-empirical | PM6 | 1.965 |
|---|---|---|
| composite | G2 | 2.032 |
| G3B3 | 1.910 | |
| G4 | 1.923 |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | 3.986 | 2.052 | 2.019 | 2.090 | 2.032 | 2.032 | 2.072 | 1.992 | 1.992 | 2.003 | 2.119 | |||
| density functional | LSDA | 2.173 | 2.079 | 2.014 | 2.100 | 2.009 | 2.009 | 2.057 | 1.912 | 1.912 | 1.962 | ||||
| BLYP | 2.206 | 2.139 | 2.056 | 2.147 | 2.280 | 2.052 | 2.106 | 1.956 | 1.956 | 2.007 | |||||
| B1B95 | 2.190 | 2.029 | 2.110 | 2.030 | 2.030 | 1.948 | 1.948 | 1.989 | |||||||
| B3LYP | 2.035 | 2.118 | 2.035 | 2.035 | 2.087 | 1.954 | 1.954 | 1.995 | 2.142 | ||||||
| B3PW91 | 2.197 | 2.090 | 2.032 | 2.112 | 2.032 | 2.032 | 2.080 | 1.949 | 1.949 | 1.990 | |||||
| mPW1PW91 | 2.196 | 2.081 | 2.026 | 2.105 | 2.029 | 2.029 | 2.076 | 1.949 | 1.949 | 1.987 | |||||
| M06-2X | 2.029 | 2.031 | 1.962 | ||||||||||||
| PBEPBE | 2.200 | 2.124 | 2.047 | 2.137 | 2.044 | 2.044 | 2.095 | 1.945 | 1.945 | 1.997 | |||||
| PBE1PBE | 2.028 | ||||||||||||||
| HSEh1PBE | 2.083 | 2.029 | 2.076 | 1.943 | |||||||||||
| TPSSh | 2.280 | 2.280 | 2.280 | 2.280 | |||||||||||
| wB97X-D | 2.280 | 2.280 | 2.280 | 2.280 | 2.280 | 2.280 | 2.280 | ||||||||
| B97D3 | 2.280 | 2.280 | 2.280 | 2.280 | 2.280 | 2.172 | 2.280 | ||||||||
| 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 | ||
| Moller Plesset perturbation | MP2 | 4.070 | 2.213 | 2.117 | 2.280 | 2.044 | 2.102 | 2.280 | 1.983 | 1.996 | 2.477 | ||||
| MP2=FULL | 4.066 | 2.083 | 2.038 | 2.117 | 2.044 | 2.044 | 2.101 | 1.982 | 1.982 | 1.995 | |||||
| MP3 | 2.280 | ||||||||||||||
| MP3=FULL | 2.280 | 2.280 | |||||||||||||
| MP4 | 4.115 | 2.230 | 2.046 | 1.983 | 1.998 | ||||||||||
| B2PLYP | 2.037 | dnf | |||||||||||||
| B2PLYP=FULLultrafine | 2.036 | 1.959 | 1.963 | ||||||||||||
| Configuration interaction | CID | 2.195 | 2.039 | 1.985 | 1.992 | ||||||||||
| CISD | 2.202 | 2.040 | 1.985 | 1.993 | |||||||||||
| 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 | ||
| Quadratic configuration interaction | QCISD | 2.325 | 2.219 | 2.117 | 2.044 | 2.044 | 2.097 | 1.987 | 1.987 | 1.995 | |||||
| QCISD(T) | 2.222 | 2.117 | 2.044 | 2.098 | 1.985 | 1.985 | 1.995 | ||||||||
| Coupled Cluster | CCD | 4.079 | 2.203 | 2.111 | 2.041 | 2.041 | 2.092 | 1.986 | 1.986 | 1.993 | |||||
| CCSD(T) | 2.219 | 2.116 | 2.043 | 2.043 | 1.985 | 1.985 | 1.995 | ||||||||
| 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 |
| CEP-31G | CEP-31G* | CEP-121G | CEP-121G* | LANL2DZ | SDD | cc-pVTZ-PP | aug-cc-pVTZ-PP | Def2TZVPP | ||
|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | 1.943 | 1.949 | 2.102 | 2.012 | 2.280 | ||||
| density functional | B3LYP | 1.942 | 1.953 | 2.114 | 1.961 | 2.280 | ||||
| PBEPBE | 2.280 | |||||||||
| Moller Plesset perturbation | MP2 | 1.975 | 1.983 | 2.127 | 2.021 | dnf |