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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 1.317 Å
| Display Options |
|---|
| semi-empirical | AM1 | 1.225 |
|---|---|---|
| PM3 | 1.250 | |
| PM6 | 1.288 | |
| composite | G2 | 1.280 |
| G3 | 1.280 | |
| G3B3 | 1.311 | |
| G3MP2 | 1.302 | |
| G4 | 1.293 | |
| CBS-Q | 1.269 |
| 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 | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | 1.317 | 1.364 | 1.364 | 1.343 | 1.280 | 1.280 | 1.282 | 1.269 | 1.269 | 1.268 | 1.289 | 1.281 | 1.273 | 1.269 | 1.267 | 1.278 | 1.269 | 1.267 | 1.296 | 1.291 | 1.269 |
| ROHF | 1.305 | 1.308 | 1.298 | 1.294 | ||||||||||||||||||
| density functional | LSDA | 1.353 | 1.374 | 1.374 | 1.360 | 1.298 | 1.298 | 1.301 | 1.293 | 1.293 | 1.286 | 1.294 | 1.290 | 1.297 | 1.290 | |||||||
| BLYP | 1.382 | 1.410 | 1.410 | 1.402 | 1.317 | 1.337 | 1.343 | 1.334 | 1.334 | 1.324 | 1.335 | 1.332 | 1.352 | |||||||||
| B1B95 | 1.345 | 1.375 | 1.375 | 1.360 | 1.298 | 1.298 | 1.300 | 1.291 | 1.291 | 1.286 | 1.293 | 1.290 | 1.289 | 1.296 | 1.290 | 1.288 | ||||||
| B3LYP | 1.357 | 1.386 | 1.386 | 1.374 | 1.311 | 1.311 | 1.316 | 1.306 | 1.306 | 1.299 | 1.316 | 1.307 | 1.308 | 1.305 | 1.303 | 1.311 | 1.305 | 1.303 | 1.320 | 1.318 | ||
| B3LYPultrafine | 1.311 | 1.296 | ||||||||||||||||||||
| B3PW91 | 1.351 | 1.380 | 1.380 | 1.366 | 1.303 | 1.303 | 1.306 | 1.297 | 1.297 | 1.291 | 1.299 | 1.295 | 1.318 | |||||||||
| mPW1PW91 | 1.346 | 1.375 | 1.375 | 1.360 | 1.298 | 1.298 | 1.301 | 1.291 | 1.291 | 1.287 | 1.294 | 1.290 | 1.313 | |||||||||
| M06-2X | 1.372 | 1.294 | 1.282 | |||||||||||||||||||
| PBEPBE | 1.371 | 1.399 | 1.399 | 1.388 | 1.322 | 1.322 | 1.326 | 1.318 | 1.318 | 1.310 | 1.325 | 1.319 | 1.316 | 1.315 | 1.322 | 1.317 | 1.314 | |||||
| PBEPBEultrafine | 1.332 | |||||||||||||||||||||
| PBE1PBE | 1.297 | |||||||||||||||||||||
| HSEh1PBE | 1.355 | 1.311 | 1.301 | 1.294 | ||||||||||||||||||
| TPSSh | 1.306 | 1.307 | 1.298 | 1.300 | ||||||||||||||||||
| wB97X-D | 1.346 | 1.293 | 1.295 | 1.288 | 1.289 | 1.295 | 1.287 | 1.287 | ||||||||||||||
| B97D3 | 1.360 | 1.308 | 1.309 | 1.303 | 1.299 | 1.320 | 1.302 | 1.315 | 1.315 | |||||||||||||
| 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 | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ | ||
| Moller Plesset perturbation | MP2 | 1.329 | 1.385 | 1.385 | 1.384 | 1.303 | 1.311 | 1.318 | 1.288 | 1.291 | 1.289 | 1.301 | 1.299 | 1.293 | 1.291 | 1.312 | 1.296 | 1.312 | 1.318 | 1.312 | ||
| MP2=FULL | 1.329 | 1.385 | 1.385 | 1.384 | 1.310 | 1.310 | 1.316 | 1.290 | 1.290 | 1.287 | 1.298 | 1.289 | 1.288 | 1.311 | 1.290 | 1.317 | 1.310 | |||||
| MP3 | 1.305 | 1.298 | ||||||||||||||||||||
| MP3=FULL | 1.297 | 1.300 | ||||||||||||||||||||
| MP4 | 1.408 | 1.330 | 1.321 | 1.310 | 1.323 | |||||||||||||||||
| B2PLYP | 1.311 | 1.335 | 1.296 | |||||||||||||||||||
| B2PLYP=FULL | 1.367 | 1.317 | 1.322 | |||||||||||||||||||
| B2PLYP=FULLultrafine | 1.314 | 1.308 | 1.303 | 1.304 | ||||||||||||||||||
| Configuration interaction | CID | 1.383 | 1.383 | 1.375 | 1.302 | 1.282 | ||||||||||||||||
| CISD | 1.392 | 1.392 | 1.385 | 1.308 | 1.287 | |||||||||||||||||
| 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 | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ | ||
| Quadratic configuration interaction | QCISD | 1.417 | 1.417 | 1.417 | 1.329 | 1.329 | 1.335 | 1.306 | 1.306 | 1.303 | 1.315 | 1.305 | ||||||||||
| QCISD(T) | 1.330 | 1.323 | 1.318 | 1.311 | 1.332 | 1.315 | ||||||||||||||||
| Coupled Cluster | CCD | 1.392 | 1.392 | 1.386 | 1.312 | 1.312 | 1.318 | 1.291 | 1.291 | 1.289 | 1.299 | 1.292 | 1.311 | 1.294 | ||||||||
| CCSD | 1.318 | 1.314 | ||||||||||||||||||||
| CCSD(T) | 1.421 | 1.328 | 1.341 | 1.349 | 1.321 | 1.321 | 1.317 | 1.316 | 1.308 | 1.305 | 1.329 | 1.312 | 1.307 | 1.329 | 1.320 | |||||||
| CCSD(T)=FULL | 1.326 | 1.329 | 1.316 | 1.302 | 1.343 | 1.318 | 1.303 | 1.328 | 1.318 | |||||||||||||
| 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 | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ |
| CEP-31G | CEP-31G* | CEP-121G | CEP-121G* | LANL2DZ | SDD | cc-pVTZ-PP | aug-cc-pVTZ-PP | Def2TZVPP | ||
|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | 1.351 | 1.290 | 1.351 | 1.289 | 1.351 | 1.351 | 1.272 | ||
| density functional | B1B95 | 1.325 | ||||||||
| B3LYP | 1.388 | 1.329 | 1.388 | 1.328 | 1.384 | 1.384 | 1.295 | |||
| PBEPBE | 1.302 | |||||||||
| Moller Plesset perturbation | MP2 | 1.403 | 1.325 | 1.400 | 1.324 | 1.402 | 1.402 | 1.289 |