|   | Computational Chemistry Comparison and Benchmark DataBase
Release 22 (May 2022) Standard Reference Database 101 
National Institute of Standards and Technology | 
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| Geometry optimizations and single point calculations. | 
Click on an entry for a list of species with completed calculations 
at that particular method and basis set.
Methods with standard basis sets
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | aug-cc-p(Q+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVDZ | daug-cc-pVTZ | daug-cc-pVQZ | 
| hartree fock | HF | 2226 | 2271 | 2245 | 2185 | 2307 | 2185 | 2218 | 2207 | 2184 | 2180 | 1234 | 82 | 2253 | 2138 | 2122 | 1319 | 2064 | 2057 | 1264 | 47 | 815 | 5 | 92 |  | 114 | 191 | 18 | 70 | 68 | 475 | 2222 | 1 | 
   
| ROHF | 169 | 688 | 673 | 632 | 696 | 668 | 670 | 670 | 630 | 172 | 275 | 27 | 465 | 645 | 644 | 542 | 588 | 585 | 531 | 19 | 131 | 3 | 42 |  | 29 | 69 | 11 | 29 | 1 | 192 | 192 |  | 
| density functional | LSDA | 1554 | 1502 | 1583 | 1560 | 1671 | 1681 | 1676 | 1681 | 1681 | 1665 | 217 | 60 | 787 | 1631 | 1627 | 256 | 1591 | 1116 | 248 | 44 | 518 | 5 | 89 |  | 61 | 137 | 17 | 66 | 13 | 37 | 37 |  | 
   
| BLYP | 2180 | 2241 | 2109 | 2180 | 2332 | 2180 | 2179 | 2068 | 2169 | 2164 | 703 | 60 | 1294 | 2114 | 2103 | 57 | 1320 | 952 | 57 | 45 | 646 | 5 | 89 |  | 61 | 139 | 17 | 67 | 13 | 475 | 474 |  | 
   
| B1B95 | 2198 | 1545 | 2216 | 2163 | 2139 | 2157 | 2144 | 2171 | 2157 | 2134 | 703 | 58 | 1299 | 2121 | 2113 | 363 | 1987 | 1680 | 335 | 45 | 679 | 5 | 93 |  | 93 | 169 | 17 | 68 | 13 | 474 | 473 |  | 
   
| B3LYP | 2219 | 2265 | 2243 | 2188 | 2215 | 2189 | 2215 | 2208 | 2187 | 2241 | 1116 | 81 | 2254 | 2140 | 2124 | 1277 | 2062 | 2160 | 1259 | 47 | 825 | 5 | 95 |  | 112 | 190 | 19 | 69 | 69 | 475 | 475 |  | 
   
| B3LYPultrafine | 64 | 1128 | 73 | 70 | 2133 | 1060 | 1183 | 1077 | 74 | 652 | 708 | 79 | 1093 | 1235 | 1435 | 57 | 1204 | 2098 | 57 | 31 | 119 | 5 | 81 |  | 53 | 132 | 10 | 68 | 13 | 474 | 474 |  | 
   
| B3PW91 | 2189 | 2242 | 2235 | 2179 | 2170 | 2177 | 2178 | 2192 | 2179 | 2159 | 704 | 60 | 1297 | 2116 | 2114 | 57 | 1320 | 978 | 57 | 45 | 663 | 5 | 90 |  | 61 | 140 | 17 | 68 | 13 | 475 | 475 |  | 
   
| mPW1PW91 | 2222 | 2239 | 2236 | 2179 | 2174 | 2174 | 2176 | 2197 | 2178 | 2164 | 704 | 60 | 1295 | 2112 | 2132 | 57 | 1690 | 1281 | 61 | 45 | 687 | 5 | 90 |  | 61 | 139 | 17 | 68 | 13 | 475 | 474 |  | 
   
| M06-2X | 1380 | 1384 | 2423 | 1330 | 2137 | 1326 | 1326 | 1344 | 1331 | 1391 | 2043 | 60 | 1298 | 1313 | 1379 | 56 | 1262 | 1306 | 57 | 41 | 137 | 5 | 90 |  | 60 | 139 | 17 | 68 | 13 | 474 | 473 |  | 
   
| PBEPBE | 2192 | 2247 | 2240 | 2178 | 2182 | 2177 | 2182 | 2198 | 2180 | 2166 | 1198 | 81 | 1297 | 2104 | 2125 | 363 | 1726 | 1471 | 356 | 45 | 710 | 5 | 94 |  | 87 | 166 | 17 | 68 | 69 | 474 | 474 |  | 
   
| PBEPBEultrafine | 62 | 1126 | 64 | 61 | 1716 | 1055 | 1069 | 1071 | 65 | 645 | 699 | 79 | 1093 | 1234 | 1234 | 57 | 1203 | 1201 | 57 | 31 | 118 | 5 | 81 |  | 53 | 131 | 10 | 68 | 13 | 474 | 474 |  | 
   
| PBE1PBE | 1330 | 1060 | 1331 | 1280 | 2165 | 1277 | 1277 | 1293 | 1281 | 1277 | 698 | 60 | 1275 | 1264 | 1265 | 57 | 1231 | 1216 | 57 | 31 | 123 | 5 | 85 |  | 59 | 137 | 17 | 68 | 13 | 474 | 474 |  | 
   
| HSEh1PBE | 1380 | 2188 | 1382 | 1330 | 2105 | 1327 | 2130 | 1343 | 1332 | 1327 | 699 | 60 | 1299 | 1313 | 2113 | 57 | 1261 | 1240 | 57 | 42 | 136 | 5 | 90 |  | 61 | 139 | 17 | 69 | 13 | 475 | 475 |  | 
   
| TPSSh | 878 | 1143 | 1140 | 1092 | 2224 | 1089 | 2223 | 1102 | 832 | 2145 | 667 |  | 1070 | 1079 | 2205 | 647 | 1062 | 1055 | 641 | 28 | 115 | 5 | 81 |  | 53 | 130 | 18 | 67 | 13 | 475 | 475 |  | 
   
| wB97X-D | 922 | 924 | 2399 | 874 | 2341 | 871 | 2340 | 884 | 2344 | 871 | 667 |  | 2341 | 2335 | 2322 | 657 | 855 | 2295 | 650 | 28 | 86 | 4 | 52 |  | 46 | 93 | 17 | 59 | 13 | 475 | 475 |  | 
   
| B97D3 | 790 | 2308 | 790 | 743 | 2247 | 741 | 2247 | 754 | 2252 | 741 | 2348 |  | 2242 | 734 | 2229 | 601 | 727 | 2200 | 588 | 26 | 75 | 4 | 45 |  | 45 | 83 | 16 | 54 | 13 | 476 | 1962 |  | 
   
| B97D3ultrafine |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | aug-cc-p(Q+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVDZ | daug-cc-pVTZ | daug-cc-pVQZ | 
|---|
| Moller Plesset perturbation | MP2 | 2180 | 2264 | 2231 | 2178 | 2321 | 2175 | 2207 | 2302 | 2180 | 2161 | 699 | 80 | 2250 | 2128 | 2031 | 1105 | 1828 | 1723 | 1036 | 47 | 698 | 5 | 91 |  | 132 | 208 | 18 | 70 | 68 | 469 | 466 | 1 | 
   
| MP2=FULL | 1833 | 2031 | 1909 | 1854 | 2188 | 2041 | 2045 | 2194 | 2176 | 1826 | 697 | 60 | 1297 | 1901 | 1859 | 1108 | 1458 | 1468 | 1020 | 46 | 524 | 5 | 92 | 2 | 132 | 207 | 18 | 77 | 68 | 470 | 469 |  | 
   
| PMP2 |  |  |  |  | 105 |  | 105 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
   
| ROMP2 | 547 | 405 | 569 | 555 | 562 | 561 | 560 | 563 | 561 | 557 | 259 | 21 | 436 | 541 | 536 | 101 | 534 | 110 | 92 | 14 | 72 | 3 | 42 |  | 27 | 62 | 11 | 27 | 1 | 187 | 186 |  | 
   
| MP3 | 55 | 60 | 60 | 59 | 2049 | 59 | 2169 | 73 | 63 | 59 | 530 | 58 | 942 | 935 | 935 | 55 | 59 | 60 | 54 | 39 | 135 | 5 | 87 |  | 68 | 143 | 17 | 68 | 13 | 303 | 303 |  | 
   
| MP3=FULL | 1 | 695 | 687 | 673 | 2122 | 671 | 2060 | 683 | 680 | 675 | 462 |  | 882 | 870 | 870 |  | 657 | 628 |  | 28 | 112 | 5 | 80 |  | 53 | 127 | 17 | 64 | 13 | 280 | 281 |  | 
   
| MP4 | 94 | 1662 | 84 | 73 | 1756 | 68 | 69 | 210 | 1538 | 96 | 510 | 58 | 1059 | 1057 | 1418 | 55 | 1013 | 961 | 55 | 44 | 141 | 5 | 87 |  | 69 | 149 | 17 | 69 | 13 | 284 | 286 |  | 
   
| MP4=FULL | 54 | 1098 | 60 | 60 | 1084 | 61 | 61 | 71 | 1078 | 61 | 512 | 59 | 57 | 1062 | 1045 | 56 | 1023 | 961 | 56 | 29 | 118 | 5 | 80 |  | 58 | 137 | 17 | 69 | 13 | 284 | 285 |  | 
   
| B2PLYP | 1137 | 1146 | 1143 | 1091 | 1938 | 1089 | 1117 | 1104 | 1092 | 1163 | 676 | 33 | 1087 | 1079 | 1988 | 33 | 1059 | 1155 | 35 | 35 | 117 | 5 | 81 |  | 55 | 134 | 17 | 68 | 13 | 472 | 468 |  | 
   
| B2PLYP=FULL | 1129 | 1171 | 1130 | 1082 | 1118 | 1080 | 1115 | 1091 | 1084 | 1078 | 666 | 6 | 1079 | 1070 | 1070 | 5 | 1051 | 1042 | 5 | 28 | 108 | 5 | 76 |  | 53 | 132 | 17 | 69 | 13 | 473 | 473 |  | 
   
| B2PLYP=FULLultrafine | 907 | 913 | 912 | 905 | 2243 | 903 | 903 | 903 | 903 | 902 | 672 |  | 902 | 2040 | 2039 | 1 | 887 | 2038 | 1 | 26 | 88 | 4 | 67 | 3 | 36 | 88 | 6 | 82 | 13 | 460 | 459 |  | 
| Configuration interaction | CID | 77 | 1848 | 1817 | 1763 | 2015 | 76 | 76 | 1825 | 118 | 94 | 670 | 58 | 56 | 623 | 647 | 55 | 60 | 61 | 54 | 31 | 159 | 5 | 83 |  | 58 | 136 | 17 | 67 | 13 | 438 | 440 |  | 
   
| CID=FULL |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  | 1 |  |  | 2 |  |  |  |  |  |  | 
   
| CISD | 78 | 1902 | 1816 | 1754 | 2004 | 235 | 76 | 1774 | 117 | 93 | 671 | 58 | 56 | 624 | 648 | 55 | 60 | 61 | 54 | 31 | 159 | 5 | 84 |  | 58 | 136 | 17 | 66 | 13 | 439 | 441 |  | 
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | aug-cc-p(Q+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVDZ | daug-cc-pVTZ | daug-cc-pVQZ | 
|---|
| Quadratic configuration interaction | QCISD | 139 | 2082 | 1841 | 1805 | 2021 | 1967 | 1933 | 1938 | 1862 | 1732 | 673 | 58 | 1274 | 1776 | 1684 | 56 | 1273 | 1293 | 55 | 47 | 399 | 5 | 90 |  | 86 | 167 | 17 | 69 | 13 | 445 | 446 |  | 
   
| QCISD(T) | 61 | 95 | 83 | 80 | 1766 | 124 | 145 | 993 | 113 | 80 | 667 | 58 | 1243 | 1564 | 1547 | 55 | 1407 | 1317 | 55 | 37 | 267 | 5 | 87 |  | 62 | 140 | 17 | 68 | 13 | 428 | 428 |  | 
   
| QCISD(T)=FULL | 1 |  |  |  | 981 |  | 969 | 11 | 4 |  | 613 |  | 1 | 958 | 960 | 705 | 947 | 903 | 678 | 28 | 91 | 5 | 56 |  | 53 | 116 | 17 | 61 | 13 | 413 | 413 |  | 
   
| QCISD(TQ) | 37 | 43 | 42 | 42 | 393 | 43 | 381 | 42 | 45 | 45 | 193 | 40 | 39 | 366 | 365 | 322 | 378 | 367 | 283 | 2 | 7 |  | 8 |  | 3 | 14 |  |  |  | 64 | 66 |  | 
   
| QCISD(TQ)=FULL |  |  |  |  | 370 |  | 338 |  |  |  | 155 |  |  | 331 | 320 | 286 | 361 | 351 | 236 |  | 7 |  | 7 |  | 2 | 10 |  |  |  | 56 | 58 |  | 
| Coupled Cluster | CCD | 144 | 1885 | 1838 | 1807 | 2034 | 1812 | 1797 | 1862 | 1697 | 1680 | 668 | 58 | 1263 | 1764 | 1601 | 63 | 1513 | 1427 | 62 | 47 | 312 | 5 | 95 |  | 91 | 166 | 17 | 70 | 13 | 440 | 442 |  | 
   
| CCSD | 44 | 91 | 81 | 79 | 1805 | 609 | 624 | 685 | 605 | 1048 | 673 | 58 | 1210 | 1337 | 1392 | 837 | 1155 | 1173 | 812 | 36 | 176 | 5 | 88 |  | 69 | 152 | 18 | 70 | 13 | 435 | 438 |  | 
   
| CCSD=FULL | 49 | 60 | 60 | 60 | 1282 | 60 | 61 | 73 | 64 | 1027 | 663 | 58 | 1200 | 1189 | 1257 | 822 | 1143 | 1165 | 792 | 30 | 124 | 5 | 83 | 1 | 58 | 139 | 18 | 76 | 13 | 421 | 424 |  | 
   
| CCSD(T) | 49 | 157 | 84 | 83 | 1668 | 978 | 816 | 988 | 806 | 750 | 713 | 72 | 1229 | 1589 | 1600 | 955 | 1492 | 1390 | 895 | 43 | 401 | 5 | 89 |  | 131 | 209 | 18 | 69 | 13 | 423 | 422 |  | 
   
| CCSD(T)=FULL | 49 | 65 | 65 | 61 | 1576 | 62 | 71 | 79 | 65 | 60 | 659 | 59 | 1233 | 1307 | 1306 | 943 | 1241 | 1164 | 879 | 45 | 205 | 5 | 90 |  | 129 | 210 | 18 | 74 | 13 | 419 | 421 |  | 
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | aug-cc-p(Q+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVDZ | daug-cc-pVTZ | daug-cc-pVQZ | 
|---|
  
| Barriers to internal rotation and inversion | 
Methods with predefined basis sets
| semi-empirical | AM1 | 127 | 
| PM3 | 123 | 
| PM6 | 14 | 
| molecular mechanics | AMBER | 1 | 
| DREIDING | 29 | 
| UFF | 2 | 
  
Methods with standard basis sets
|  |  | 3-21G | 6-31G | 6-31G* | 6-31G** | 6-31+G** | 6-311G* | 6-31G(2df,p) | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | cc-pV(T+d)Z | aug-cc-pV(T+d)Z | cc-pCVTZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVTZ | 
| hartree fock | HF | 132 | 1 | 199 | 1 | 143 | 1 |  | 1 | 9 | 144 | 2 | 14 | 1 |  | 1 |  |  |  | 
   
| ROHF | 3 |  | 4 |  | 3 |  |  |  |  | 2 |  |  |  |  |  |  |  |  | 
| density functional | BLYP |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
   
| B1B95 | 2 |  | 2 |  | 1 |  |  |  |  | 1 |  | 1 |  |  |  |  |  |  | 
   
| B3LYP | 119 | 1 | 175 |  | 134 | 1 | 1 | 2 | 4 | 128 | 2 | 15 | 1 |  | 1 |  | 1 |  | 
   
| PBEPBE |  |  | 4 |  | 2 | 1 |  | 1 |  | 3 |  |  |  |  |  |  |  |  | 
   
| PBEPBEultrafine | 1 |  | 2 |  | 1 |  |  |  |  | 2 |  | 2 |  | 1 |  |  |  |  | 
   
| TPSSh |  |  | 1 |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  | 
   
| wB97X-D | 2 |  | 46 |  | 2 |  |  | 1 |  | 49 |  | 11 |  | 1 | 1 |  | 1 | 1 | 
   
| B97D3 |  |  | 16 |  |  |  |  | 1 |  | 17 | 1 | 6 | 1 | 1 | 1 |  |  |  | 
|  |  | 3-21G | 6-31G | 6-31G* | 6-31G** | 6-31+G** | 6-311G* | 6-31G(2df,p) | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | cc-pV(T+d)Z | aug-cc-pV(T+d)Z | cc-pCVTZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVTZ | 
|---|
| Moller Plesset perturbation | MP2 | 116 |  | 172 |  | 130 |  | 1 | 2 | 5 | 126 |  | 27 |  |  | 1 |  | 2 | 1 | 
   
| MP2=FULL |  |  | 10 |  | 6 |  |  | 1 |  | 10 |  | 8 | 5 | 2 | 3 | 6 | 1 | 2 | 
   
| B2PLYP |  |  | 1 |  |  |  |  |  |  | 2 |  | 49 |  |  |  |  |  |  | 
   
| B2PLYP=FULL |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  | 
   
| B2PLYP=FULLultrafine |  |  |  |  |  |  |  |  |  |  |  | 3 | 1 | 4 |  | 1 |  |  | 
|  |  | 3-21G | 6-31G | 6-31G* | 6-31G** | 6-31+G** | 6-311G* | 6-31G(2df,p) | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | cc-pV(T+d)Z | aug-cc-pV(T+d)Z | cc-pCVTZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVTZ | 
|---|
| Quadratic configuration interaction | QCISD |  |  | 1 |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  | 
   
| QCISD(T) |  |  | 1 |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Coupled Cluster | CCD |  |  | 5 |  | 3 |  |  |  |  | 2 |  | 2 |  |  |  |  |  |  | 
   
| CCSD |  |  | 48 |  | 3 |  | 1 |  |  | 46 |  | 15 |  |  |  |  | 2 | 1 | 
   
| CCSD=FULL |  |  |  |  |  |  |  |  |  | 1 |  | 2 | 3 |  | 1 |  | 1 |  | 
   
| CCSD(T) |  |  | 6 |  | 1 |  |  |  |  | 2 |  |  |  |  |  |  |  |  | 
|  |  | 3-21G | 6-31G | 6-31G* | 6-31G** | 6-31+G** | 6-311G* | 6-31G(2df,p) | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | cc-pV(T+d)Z | aug-cc-pV(T+d)Z | cc-pCVTZ | aug-cc-pCVTZ | Sadlej_pVTZ | daug-cc-pVTZ | 
|---|
  
Methods with predefined basis sets
| semi-empirical | AM1 | 7 | 
| PM3 | 8 | 
  
Methods with standard basis sets
|  |  | 3-21G | 6-31G* | 6-31+G** | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | 
| hartree fock | HF | 11 | 13 | 12 | 11 | 11 | 11 | 11 | 9 | 
   
| ROHF |  | 1 |  |  |  |  |  |  | 
| density functional | B3LYP | 9 | 10 | 10 | 9 | 8 | 9 | 8 | 7 | 
   
| mPW1PW91 | 8 | 10 | 10 | 9 | 8 | 7 | 8 | 5 | 
|  |  | 3-21G | 6-31G* | 6-31+G** | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | 
|---|
| Moller Plesset perturbation | MP2 | 8 | 10 | 11 | 10 | 10 | 10 | 9 | 5 | 
|  |  | 3-21G | 6-31G* | 6-31+G** | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | 
|---|
| Quadratic configuration interaction | QCISD | 8 | 9 | 9 | 7 | 7 | 5 | 7 | 1 | 
| Coupled Cluster | CCD | 9 | 8 | 9 | 7 | 7 | 7 | 6 | 2 | 
   
| CCSD | 5 | 6 | 5 | 2 | 3 | 2 | 2 | 2 | 
   
| CCSD(T) | 6 | 5 | 6 | 2 | 5 | 3 | 3 | 2 | 
|  |  | 3-21G | 6-31G* | 6-31+G** | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | 
|---|
  
Single point energy calculations (select basis sets)
|  |  | 6-311+G(3df,2p) | cc-pVDZ | cc-pVTZ | aug-cc-pVDZ | aug-cc-pVTZ | 
      
| Moller Plesset perturbation | MP2FC// HF/6-31G* | 3 | 3 | 3 | 3 | 1 | 
      
| MP2FC// B3LYP/6-31G* | 1 | 1 | 1 | 1 | 1 | 
      
| Coupled Cluster | CCSD(T)// HF/6-31G* | 1 | 1 | 1 | 1 | 1 | 
  
Methods with standard basis sets
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | daug-cc-pVDZ | daug-cc-pVTZ | 
| hartree fock | HF | 747 | 755 | 755 | 740 | 1077 | 747 | 746 | 748 | 744 | 745 | 180 | 16 | 711 | 737 | 740 | 622 | 731 | 729 | 611 | 7 | 175 | 1 | 14 | 14 | 28 | 2 | 8 | 128 | 669 | 
   
| ROHF | 123 | 370 | 367 | 359 | 404 | 362 | 362 | 363 | 361 | 122 | 122 | 10 | 222 | 353 | 353 | 335 | 347 | 348 | 325 | 5 | 31 | 1 | 10 | 7 | 17 | 2 | 5 | 90 | 90 | 
| density functional | LSDA | 576 | 560 | 592 | 587 | 604 | 606 | 601 | 601 | 604 | 599 | 54 | 13 | 220 | 595 | 595 | 230 | 593 | 525 | 221 | 6 | 105 | 1 | 14 | 10 | 23 | 2 | 8 | 13 | 13 | 
   
| BLYP | 739 | 751 | 751 | 741 | 1187 | 740 | 740 | 740 | 736 | 741 | 178 | 13 | 353 | 733 | 734 | 13 | 266 | 281 | 13 | 6 | 127 | 1 | 14 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| B1B95 | 719 | 457 | 723 | 712 | 713 | 713 | 695 | 710 | 703 | 707 | 180 | 12 | 354 | 710 | 702 | 319 | 650 | 647 | 288 | 6 | 108 | 1 | 14 | 14 | 27 | 2 | 8 | 128 | 128 | 
   
| B3LYP | 741 | 755 | 753 | 744 | 749 | 744 | 746 | 746 | 742 | 758 | 180 | 16 | 711 | 734 | 736 | 619 | 730 | 743 | 609 | 7 | 175 | 1 | 15 | 15 | 29 | 2 | 8 | 128 | 128 | 
   
| B3LYPultrafine | 13 | 302 | 17 | 17 | 742 | 294 | 294 | 297 | 17 | 171 | 182 | 16 | 297 | 342 | 342 | 13 | 337 | 649 | 13 | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| B3PW91 | 741 | 754 | 752 | 741 | 744 | 743 | 741 | 746 | 742 | 742 | 179 | 13 | 354 | 734 | 733 | 13 | 266 | 265 | 13 | 6 | 127 | 1 | 14 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| mPW1PW91 | 743 | 754 | 753 | 746 | 747 | 746 | 744 | 748 | 744 | 744 | 179 | 13 | 355 | 737 | 736 | 13 | 388 | 386 | 16 | 6 | 128 | 1 | 14 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| M06-2X | 366 | 367 | 794 | 358 | 635 | 358 | 358 | 361 | 358 | 358 | 698 | 13 | 354 | 355 | 355 | 13 | 354 | 353 | 13 | 6 | 20 | 1 | 14 | 10 | 23 | 2 | 8 | 128 | 127 | 
   
| PBEPBE | 741 | 753 | 752 | 743 | 745 | 743 | 743 | 747 | 743 | 743 | 180 | 16 | 354 | 733 | 736 | 326 | 403 | 400 | 318 | 6 | 129 | 1 | 15 | 14 | 27 | 2 | 8 | 128 | 128 | 
   
| PBEPBEultrafine | 13 | 301 | 13 | 13 | 342 | 290 | 293 | 293 | 13 | 167 | 179 | 16 | 297 | 338 | 338 | 13 | 337 | 339 | 13 | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| PBE1PBE | 359 | 286 | 358 | 351 | 681 | 351 | 351 | 354 | 351 | 351 | 179 | 13 | 351 | 348 | 348 | 13 | 347 | 346 | 13 | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| HSEh1PBE | 365 | 631 | 364 | 357 | 661 | 357 | 641 | 360 | 357 | 357 | 179 | 13 | 354 | 354 | 619 | 13 | 353 | 352 | 13 | 6 | 20 | 1 | 14 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| TPSSh | 244 | 298 | 296 | 290 | 683 | 290 | 683 | 293 | 237 | 653 | 166 |  | 286 | 288 | 678 | 211 | 287 | 287 | 208 | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| wB97X-D | 257 | 257 | 707 | 250 | 700 | 250 | 699 | 253 | 699 | 250 | 166 |  | 700 | 699 | 695 | 216 | 249 | 692 | 212 | 5 | 16 | 1 | 9 | 10 | 17 | 2 | 7 | 128 | 128 | 
   
| B97D3 | 208 | 667 | 206 | 201 | 657 | 201 | 657 | 204 | 657 | 201 | 696 |  | 653 | 201 | 653 | 187 | 201 | 650 | 187 | 5 | 12 | 1 | 7 | 10 | 13 | 2 | 6 | 128 | 643 | 
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | daug-cc-pVDZ | daug-cc-pVTZ | 
|---|
| Moller Plesset perturbation | MP2 | 730 | 755 | 749 | 743 | 1190 | 743 | 744 | 1179 | 741 | 738 | 180 | 16 | 714 | 732 | 720 | 515 | 732 | 673 | 464 | 7 | 171 | 1 | 14 | 16 | 30 | 2 | 8 | 127 | 127 | 
   
| MP2=FULL | 727 | 754 | 750 | 740 | 745 | 743 | 744 | 745 | 739 | 737 | 179 | 13 | 355 | 733 | 717 | 512 | 448 | 646 | 463 | 7 | 171 | 1 | 14 | 16 | 30 | 2 | 8 | 128 | 128 | 
   
| PMP2 |  |  |  |  | 1 |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
   
| ROMP2 | 302 | 219 | 320 | 314 | 320 | 319 | 318 | 321 | 317 | 316 | 112 | 4 | 189 | 311 | 307 | 90 | 307 | 100 | 78 | 3 | 28 | 1 | 9 | 7 | 17 | 2 | 6 | 86 | 84 | 
   
| MP3 | 10 | 11 | 11 | 11 | 718 | 11 | 664 | 13 | 11 | 11 | 152 | 11 | 272 | 271 | 271 | 11 | 11 | 11 | 11 | 5 | 20 | 1 | 13 | 10 | 22 | 2 | 8 | 102 | 102 | 
   
| MP3=FULL |  | 222 | 220 | 219 | 655 | 219 | 641 | 223 | 219 | 219 | 136 |  | 256 | 253 | 254 |  | 218 | 214 |  | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 95 | 96 | 
   
| MP4 | 12 | 715 | 12 | 12 | 713 | 11 | 11 | 14 | 711 | 13 | 151 | 11 | 313 | 312 | 595 | 11 | 310 | 323 | 11 | 6 | 22 | 1 | 14 | 10 | 22 | 2 | 8 | 99 | 100 | 
   
| MP4=FULL | 11 | 319 | 13 | 13 | 316 | 13 | 13 | 15 | 316 | 13 | 152 | 13 | 13 | 313 | 312 | 13 | 312 | 305 | 13 | 5 | 19 | 1 | 13 | 10 | 22 | 2 | 8 | 99 | 99 | 
   
| B2PLYP | 302 | 303 | 301 | 295 | 571 | 295 | 298 | 298 | 293 | 295 | 167 | 1 | 295 | 293 | 622 | 1 | 293 | 293 | 1 | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 128 | 127 | 
   
| B2PLYP=FULL | 298 | 301 | 297 | 291 | 293 | 291 | 293 | 294 | 291 | 291 | 165 |  | 291 | 289 | 289 |  | 289 | 287 |  | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 128 | 128 | 
   
| B2PLYP=FULLultrafine | 261 | 262 | 262 | 261 | 780 | 261 | 261 | 261 | 261 | 261 | 179 |  | 261 | 780 | 778 |  | 261 | 781 |  | 5 | 16 | 1 | 9 | 10 | 18 | 2 | 8 | 129 | 129 | 
| Configuration interaction | CID | 12 | 742 | 739 | 730 | 735 | 11 | 13 | 735 | 13 | 13 | 175 | 11 | 11 | 165 | 168 | 11 | 11 | 11 | 11 | 6 | 23 | 1 | 14 | 10 | 23 | 2 | 8 | 124 | 126 | 
   
| CISD | 12 | 733 | 737 | 724 | 734 | 11 | 13 | 734 | 13 | 13 | 175 | 11 | 11 | 166 | 168 | 11 | 11 | 11 | 11 | 6 | 23 | 1 | 14 | 10 | 23 | 2 | 8 | 125 | 126 | 
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | daug-cc-pVDZ | daug-cc-pVTZ | 
|---|
| Quadratic configuration interaction | QCISD | 12 | 740 | 740 | 734 | 736 | 737 | 735 | 737 | 731 | 723 | 177 | 11 | 351 | 700 | 685 | 11 | 384 | 378 | 11 | 7 | 115 | 1 | 14 | 15 | 28 | 2 | 8 | 127 | 128 | 
   
| QCISD(T) | 12 | 14 | 12 | 12 | 729 | 15 | 15 | 270 | 13 | 13 | 177 | 11 | 350 | 692 | 680 | 11 | 635 | 594 | 11 | 6 | 107 | 1 | 13 | 10 | 23 | 2 | 8 | 124 | 125 | 
   
| QCISD(T)=FULL |  |  |  |  | 284 |  | 280 | 3 |  |  | 165 |  |  | 277 | 278 | 246 | 281 | 278 | 241 | 5 | 16 | 1 | 9 | 11 | 20 | 2 | 7 | 119 | 121 | 
   
| QCISD(TQ) | 3 | 5 | 5 | 5 | 139 | 5 | 135 | 5 | 5 | 5 | 69 | 4 | 5 | 131 | 131 | 120 | 139 | 135 | 110 |  | 1 |  | 2 |  | 3 |  |  | 29 | 30 | 
   
| QCISD(TQ)=FULL |  |  |  |  | 139 |  | 126 |  |  |  | 65 |  |  | 122 | 120 | 115 | 138 | 136 | 105 |  | 1 |  | 2 |  | 3 |  |  | 24 | 26 | 
| Coupled Cluster | CCD | 12 | 745 | 742 | 738 | 740 | 739 | 740 | 741 | 733 | 723 | 177 | 11 | 348 | 700 | 683 | 15 | 685 | 638 | 15 | 7 | 116 | 1 | 15 | 11 | 24 | 2 | 8 | 126 | 127 | 
   
| CCSD | 5 | 14 | 12 | 12 | 696 | 151 | 150 | 155 | 148 | 280 | 178 | 11 | 338 | 389 | 386 | 284 | 338 | 331 | 277 | 6 | 20 | 1 | 13 | 10 | 23 | 2 | 8 | 127 | 128 | 
   
| CCSD=FULL | 9 | 13 | 13 | 13 | 336 | 13 | 13 | 15 | 13 | 278 | 176 | 13 | 337 | 334 | 334 | 285 | 335 | 329 | 274 | 5 | 19 | 1 | 13 | 10 | 23 | 2 | 8 | 125 | 126 | 
   
| CCSD(T) | 7 | 19 | 12 | 12 | 540 | 266 | 220 | 268 | 215 | 210 | 178 | 15 | 349 | 698 | 694 | 425 | 693 | 655 | 381 | 6 | 132 | 1 | 13 | 15 | 29 | 2 | 8 | 125 | 126 | 
   
| CCSD(T)=FULL | 8 | 12 | 12 | 12 | 693 | 12 | 15 | 14 | 12 | 12 | 177 | 12 | 347 | 401 | 409 | 416 | 400 | 393 | 374 | 6 | 30 | 1 | 12 | 15 | 28 | 2 | 8 | 125 | 126 | 
|  |  | 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) | 6-311+G(3df,2pd) | TZVP | cc-pVDZ | cc-pVTZ | cc-pVQZ | aug-cc-pVDZ | aug-cc-pVTZ | aug-cc-pVQZ | cc-pV(D+d)Z | cc-pV(T+d)Z | cc-pV(Q+d)Z | aug-cc-pV(T+d)Z | cc-pCVDZ | cc-pCVTZ | cc-pCVQZ | aug-cc-pCVTZ | daug-cc-pVDZ | daug-cc-pVTZ | 
|---|
  
| Total number of calculations completed: 994839 | 
|---|
For descriptions of the methods (AM1, HF, MP2, ...) and basis sets (3-21G, 3-21G*, 6-31G, ...) see the 
glossary in section I.C. 
Predefined means the basis set used is determined by the method.