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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 2.361 Å
| Display Options |
|---|
| semi-empirical | PM3 | 2.122 |
|---|---|---|
| PM6 | 1.700 | |
| composite | G2 | 2.397 |
| G3 | 2.397 | |
| G3B3 | 2.373 | |
| G3MP2 | 2.397 | |
| G4 | 2.377 | |
| CBS-Q | 2.397 |
| 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-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | 2.220 | 2.421 | 2.378 | 2.433 | 2.397 | 2.397 | 2.406 | 2.401 | 2.401 | 2.385 | 2.389 | 2.405 | 2.398 | 2.398 | 2.396 | 2.407 | 2.397 | 2.396 | 2.397 | 2.397 | 2.391 | 2.397 |
| density functional | LSDA | 2.185 | 2.364 | 2.313 | 2.375 | 2.342 | 2.342 | 2.355 | 2.347 | 2.347 | 2.322 | 2.350 | 2.342 | 2.345 | 2.345 | 2.341 | 2.342 | 2.333 | |||||
| BLYP | 2.221 | 2.404 | 2.358 | 2.421 | 2.392 | 2.389 | 2.406 | 2.401 | 2.401 | 2.373 | 2.402 | 2.388 | 2.394 | 2.399 | 2.390 | 2.386 | |||||||
| B1B95 | 2.213 | 2.360 | 2.416 | 2.379 | 2.380 | 2.394 | 2.387 | 2.387 | 2.364 | 2.390 | 2.384 | 2.381 | dnf | 2.383 | 2.371 | ||||||||
| B3LYP | 2.213 | 2.393 | 2.347 | 2.409 | 2.376 | 2.376 | 2.391 | 2.386 | 2.386 | 2.361 | 2.372 | 2.388 | 2.376 | 2.381 | 2.376 | 2.386 | 2.381 | 2.377 | 2.380 | 2.377 | 2.372 | ||
| B3LYPultrafine | 2.393 | 2.376 | 2.376 | 2.390 | 2.386 | 2.387 | 2.375 | 2.381 | 2.385 | 2.388 | 2.377 | 2.372 | |||||||||||
| B3PW91 | 2.214 | 2.408 | 2.363 | 2.416 | 2.381 | 2.381 | 2.393 | 2.387 | 2.387 | 2.366 | 2.391 | 2.383 | 2.384 | 2.388 | 2.389 | 2.384 | 2.374 | ||||||
| mPW1PW91 | 2.212 | 2.401 | 2.356 | 2.411 | 2.376 | 2.376 | 2.387 | 2.382 | 2.382 | 2.361 | 2.386 | 2.379 | 2.379 | 2.384 | 2.377 | 2.379 | 2.370 | ||||||
| M06-2X | 2.204 | 2.386 | 2.338 | 2.401 | 2.364 | 2.364 | 2.376 | 2.370 | 2.370 | 2.372 | 2.357 | 2.374 | 2.366 | 2.382 | 2.374 | 2.381 | 2.366 | 2.360 | |||||
| PBEPBE | 2.215 | 2.404 | 2.357 | 2.417 | 2.383 | 2.383 | 2.397 | 2.390 | 2.390 | 2.366 | 2.376 | 2.393 | 2.384 | 2.386 | 2.390 | 2.385 | 2.385 | 2.376 | |||||
| PBEPBEultrafine | 2.403 | 2.382 | 2.382 | 2.396 | 2.390 | 2.392 | 2.383 | 2.385 | 2.389 | 2.385 | 2.385 | 2.376 | |||||||||||
| PBE1PBE | 2.209 | 2.351 | 2.408 | 2.373 | 2.373 | 2.385 | 2.379 | 2.379 | 2.358 | 2.382 | 2.375 | 2.375 | 2.381 | 2.374 | 2.375 | 2.366 | |||||||
| HSEh1PBE | 2.209 | 2.397 | 2.351 | 2.408 | 2.374 | 2.374 | 2.386 | 2.380 | 2.380 | 2.359 | 2.383 | 2.376 | 2.376 | 2.382 | 2.375 | 2.376 | 2.367 | ||||||
| TPSSh | 2.407 | 2.361 | 2.417 | 2.389 | 2.382 | 2.395 | 2.387 | 2.381 | 2.392 | 2.385 | 2.390 | 2.390 | 2.383 | 2.386 | 2.375 | ||||||||
| wB97X-D | 2.394 | 2.395 | 2.402 | 2.399 | 2.402 | 2.402 | 2.397 | 2.397 | |||||||||||||||
| B97D3 | 2.416 | 2.401 | 2.409 | 2.408 | 2.401 | 2.422 | 2.405 | 2.412 | 2.412 | ||||||||||||||
| 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-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ | ||
| Moller Plesset perturbation | MP2 | 2.215 | 2.434 | 2.376 | 2.447 | 2.395 | 2.393 | 2.404 | 2.390 | 2.386 | 2.393 | 2.405 | 2.402 | 2.402 | 2.405 | 2.425 | 2.406 | 2.408 | 2.397 | 2.397 | 2.397 | ||
| MP2=FULL | 2.238 | 2.434 | 2.373 | 2.449 | 2.393 | 2.391 | 2.400 | 2.380 | 2.380 | 2.384 | 2.401 | 2.400 | 2.398 | 2.386 | 2.409 | 2.385 | 2.290 | 2.397 | 2.388 | 2.373 | |||
| MP3 | 2.392 | 2.394 | 2.404 | 2.401 | 2.403 | 2.396 | 2.394 | ||||||||||||||||
| MP3=FULL | 2.393 | 2.398 | 2.400 | 2.399 | 2.396 | 2.389 | 2.374 | ||||||||||||||||
| MP4 | 2.436 | 2.395 | 2.386 | 2.386 | 2.407 | 2.403 | 2.405 | 2.428 | 2.413 | 2.398 | 2.396 | ||||||||||||
| MP4=FULL | 2.436 | 2.392 | 2.380 | 2.401 | 2.398 | 2.411 | 2.372 | 2.391 | 2.375 | ||||||||||||||
| B2PLYP | 2.211 | 2.402 | 2.352 | 2.418 | 2.386 | 2.378 | 2.391 | 2.382 | 2.382 | 2.380 | 2.389 | 2.380 | 2.390 | 2.395 | 2.392 | 2.380 | 2.376 | ||||||
| B2PLYP=FULL | 2.210 | 2.403 | 2.351 | 2.418 | 2.389 | 2.377 | 2.397 | 2.380 | 2.380 | 2.362 | 2.388 | 2.380 | 2.383 | 2.389 | 2.375 | 2.377 | 2.369 | ||||||
| B2PLYP=FULLultrafine | 2.377 | 2.379 | 2.382 | 2.375 | |||||||||||||||||||
| Configuration interaction | CID | 2.434 | 2.375 | 2.449 | 2.392 | 2.384 | 2.396 | 2.392 | |||||||||||||||
| CISD | 2.435 | 2.376 | 2.450 | 2.393 | 2.385 | 2.396 | 2.393 | ||||||||||||||||
| 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-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | daug-cc-pVTZ | ||
| Quadratic configuration interaction | QCISD | 2.436 | 2.377 | 2.452 | 2.395 | 2.394 | 2.404 | 2.386 | 2.386 | 2.392 | 2.406 | 2.403 | 2.401 | 2.425 | 2.404 | 2.398 | 2.395 | ||||||
| QCISD(T) | 2.396 | 2.387 | 2.407 | 2.404 | 2.405 | 2.428 | 2.413 | 2.399 | 2.396 | ||||||||||||||
| QCISD(T)=FULL | 2.393 | 2.403 | 2.402 | 2.398 | 2.384 | 2.411 | 2.372 | 2.278 | 2.391 | 2.375 | |||||||||||||
| QCISD(TQ) | 2.395 | 2.406 | 2.404 | 2.405 | 2.403 | 2.427 | 2.412 | 2.406 | |||||||||||||||
| QCISD(TQ)=FULL | 2.393 | 2.403 | 2.402 | 2.398 | dnf | 2.411 | 2.372 | dnf | |||||||||||||||
| Coupled Cluster | CCD | 2.435 | 2.375 | 2.450 | 2.394 | 2.393 | 2.403 | 2.384 | 2.384 | 2.388 | 2.405 | 2.401 | 2.403 | 2.424 | 2.409 | 2.396 | 2.394 | ||||||
| CCSD | 2.395 | 2.386 | 2.392 | 2.406 | 2.402 | 2.401 | 2.401 | 2.424 | 2.404 | 2.403 | 2.398 | 2.394 | |||||||||||
| CCSD=FULL | 2.394 | 2.384 | 2.402 | 2.400 | 2.397 | 2.382 | 2.408 | 2.383 | 2.278 | 2.391 | 2.375 | ||||||||||||
| CCSD(T) | 2.396 | 2.396 | 2.387 | 2.401 | 2.407 | 2.403 | 2.405 | 2.404 | 2.427 | 2.413 | 2.406 | 2.405 | 2.399 | 2.396 | |||||||||
| CCSD(T)=FULL | 2.393 | 2.403 | 2.403 | 2.402 | 2.398 | 2.384 | 2.411 | 2.372 | 2.279 | 2.397 | 2.391 | 2.375 | |||||||||||
| 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-pV(T+d)Z | 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 | 2.508 | 2.452 | 2.430 | 2.389 | 2.433 | 2.415 | 2.389 | ||
| density functional | B1B95 | 2.503 | 2.448 | |||||||
| B3LYP | 2.504 | 2.451 | 2.438 | 2.397 | 2.435 | 2.395 | 2.379 | |||
| PBEPBE | 2.381 | |||||||||
| Moller Plesset perturbation | MP2 | 2.517 | 2.449 | 2.446 | 2.382 | 2.434 | 2.426 | 2.392 |