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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: Calculated > Geometry > Calculated geometry > One type of bond | |
| semi-empirical | AM1 | 1.6838 9 |
|---|---|---|
| PM3 | 1.7221 9 |
|
| PM6 | 1.7186 9 |
|
| composite | G2 | 1.6968 9 |
| G3 | 1.7097 5 |
|
| G3B3 | 1.7270 9 |
|
| G4 | 1.7148 9 |
|
| CBS-Q | 1.7112 9 |
| CEP-31G | CEP-31G* | CEP-121G | CEP-121G* | LANL2DZ | SDD | cc-pVTZ-PP | aug-cc-pVTZ-PP | Def2TZVPP | ||
|---|---|---|---|---|---|---|---|---|---|---|
| hartree fock | HF | 1.7323 9 |
1.7339 9 |
1.7244 9 |
1.7593 9 |
1.6737 5 |
1.6876 9 |
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| ROHF | 1.7305 1 |
1.7330 1 |
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| density functional | LSDA | 1.6984 5 |
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| BLYP | 1.7369 5 |
1.7459 6 |
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| B1B95 | 1.6987 5 |
1.7091 6 |
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| B3LYP | 1.7604 9 |
1.7626 9 |
1.7548 9 |
1.7872 9 |
1.7122 5 |
1.7255 9 |
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| B3LYPultrafine | 1.7122 5 |
1.7219 6 |
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| B3PW91 | 1.7056 5 |
1.7152 6 |
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| mPW1PW91 | 1.7003 5 |
1.7104 6 |
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| M06-2X | 1.6998 5 |
1.7097 6 |
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| PBEPBE | 1.7261 5 |
1.7387 9 |
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| PBEPBEultrafine | 1.7261 5 |
1.7357 6 |
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| PBE1PBE | 1.7005 5 |
1.7107 6 |
||||||||
| HSEh1PBE | 1.7017 5 |
1.7119 6 |
||||||||
| TPSSh | 1.7097 5 |
1.7192 6 |
||||||||
| wB97X-D | 1.7436 7 |
1.7461 7 |
1.7398 7 |
1.7727 7 |
1.7026 5 |
1.7124 6 |
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| B97D3 | 1.7223 5 |
1.7305 6 |
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| Moller Plesset perturbation | MP2 | 1.7742 9 |
1.7758 9 |
1.7642 9 |
1.7984 9 |
1.6964 5 |
1.7125 9 |
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| MP2=FULL | 1.6925 5 |
1.7098 6 |
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| ROMP2 | 1.7465 1 |
1.7533 1 |
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| MP3 | 1.6856 5 |
|||||||||
| MP3=FULL | 1.6824 5 |
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| MP4 | 1.6991 5 |
|||||||||
| MP4=FULL | 1.6949 5 |
|||||||||
| B2PLYP | 1.7046 5 |
1.7159 6 |
||||||||
| B2PLYP=FULL | 1.7034 5 |
1.7160 6 |
||||||||
| B2PLYP=FULLultrafine | 1.7034 5 |
1.7160 6 |
||||||||
| Configuration interaction | CID | 1.7356 1 |
1.7335 2 |
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| CISD | 1.6792 5 |
1.6921 6 |
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| Quadratic configuration interaction | QCISD | 1.6913 5 |
1.7047 6 |
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| QCISD(T) | 1.6953 5 |
1.7088 6 |
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| QCISD(T)=FULL | 1.6916 5 |
1.7089 6 |
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| Coupled Cluster | CCD | 1.6879 5 |
1.7011 6 |
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| CCSD | 1.6898 5 |
1.7031 6 |
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| CCSD=FULL | 1.6863 5 |
1.7031 6 |
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| CCSD(T) | 1.7465 1 |
1.7461 2 |
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| CCSD(T)=FULL | 1.6909 5 |
1.7081 6 |