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Comparison of levels of theory for Ga-Cl


Click on an entry for a histogram of the values.
The subscript refers to how many bonds of that type have been calculated.
average calculated bond lengths (Å)
Methods with predefined basis sets
semi-empirical PM3 2.0782
5
PM6 2.1070
5
composite G2 2.1374
5
G3 2.1411
5
G3B3 2.1595
5
G4 2.1760
2
CBS-Q 2.1298
5

average calculated bond lengths (Å)
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) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVDZ daug-cc-pVTZ
hartree fock HF 2.0302
5
2.2153
5
2.1516
5
2.1961
5
2.1383
5
2.1383
5
2.1304
5
2.1370
5
2.1370
5
2.1244
5
2.1459
4
2.1406
5
2.1469
5
2.1363
5
2.1328
5
2.1518
5
2.1370
5
2.1330
5
2.2598
1
2.1369
5
ROHF   2.2383
2
2.1723
2
2.2235
2
2.1575
2
2.1575
2
2.1458
2
2.1547
2
2.1547
2
  2.2290
1
2.1559
2
2.1643
2
2.1494
2
2.1454
2
2.1717
2
2.1507
2
2.1457
2
2.2598
1
2.2348
1
density functional LSDA 2.0028
4
  2.1293
5
2.1683
5
2.1171
5
2.1171
5
2.1082
5
2.1137
5
2.1137
5
2.1023
5
  2.1189
5
2.1289
5
2.1095
5
  2.1302
5
2.1101
5
     
BLYP 2.0221
5
2.2266
5
2.1948
5
2.2363
5
2.1798
5
2.1798
5
2.1718
5
2.1823
5
2.1823
5
2.1642
5
2.1760
4
2.1854
5
2.1947
5
2.1759
5
  2.1978
5
2.1773
5
  2.2927
1
2.2679
1
B1B95 2.0003
5
2.1534
4
2.1473
5
2.1869
5
2.1327
5
2.1327
5
2.1241
5
2.1321
5
2.1321
5
2.1182
5
2.1338
4
2.1356
5
2.1438
5
2.1294
5
  2.1466
5
2.1299
5
  2.2439
1
2.2207
1
B3LYP 2.0048
5
2.2137
5
2.1708
5
2.2130
5
2.1562
5
2.1562
5
2.1480
5
2.1568
5
2.1568
5
2.1415
5
2.1546
4
2.1606
5
2.1693
5
2.1526
5
2.1486
5
2.1722
5
2.1534
5
2.1485
5
2.2693
1
2.2450
1
B3LYPultrafine   2.2137
5
    2.1561
5
2.1561
5
2.1480
5
2.1568
5
  2.1491
4
2.1546
4
2.1606
5
2.1691
5
2.1526
5
  2.1720
5
2.1535
5
  2.2693
1
2.2450
1
B3PW91 2.0058
5
2.2068
5
2.1573
5
2.1951
5
2.1403
5
2.1403
5
2.1316
5
2.1386
5
2.1386
5
2.1251
5
2.1403
4
2.1431
5
2.1521
5
2.1360
5
  2.1544
5
2.1366
5
  2.2519
1
2.2274
1
mPW1PW91 2.0031
5
2.2039
5
2.1522
5
2.1897
5
2.1352
5
2.1352
5
2.1267
5
2.1330
5
2.1330
5
2.1201
5
2.1356
4
2.1379
5
2.1464
5
2.1308
5
  2.1490
5
2.1314
5
  2.2465
1
2.2218
1
M06-2X 1.9916
5
2.1936
5
2.1478
5
2.1983
5
2.1431
5
2.1431
5
2.1352
5
2.1452
5
2.1452
5
2.1321
5
2.1388
5
2.1488
5
2.1542
5
2.1442
5
  2.1586
5
2.1449
5
  2.2557
1
2.2353
1
PBEPBE 2.0149
5
2.2152
5
2.1745
5
2.2108
5
2.1553
5
2.1553
5
2.1468
5
2.1548
5
2.1548
5
2.1389
5
2.1533
4
2.1590
5
2.1681
5
2.1505
5
  2.1706
5
2.1514
5
  2.2657
1
2.2404
1
PBEPBEultrafine   2.2151
5
    2.1553
5
2.1553
5
2.1469
5
2.1548
5
  2.1476
4
2.1533
4
2.1591
5
2.1679
5
2.1506
5
  2.1704
5
2.1514
5
  2.2657
1
2.2404
1
PBE1PBE 2.0009
5
2.1587
4
2.1524
5
2.1896
5
2.1348
5
2.1348
5
2.1263
5
2.1328
5
2.1328
5
2.1195
5
2.1351
4
2.1374
5
2.1458
5
2.1305
5
  2.1485
5
2.1311
5
  2.2454
1
2.2208
1
HSEh1PBE 2.0019
5
2.2038
5
2.1525
5
2.1910
5
2.1360
5
2.1360
5
2.1276
5
2.1340
5
2.1340
5
2.1206
5
2.1358
4
2.1385
5
2.1472
5
2.1314
5
  2.1497
5
2.1319
5
  2.2468
1
2.2219
1
TPSSh 2.0116
5
2.2111
5
2.1614
5
2.1984
5
2.1434
5
2.1434
5
2.1348
5
2.1413
5
2.1413
5
2.1270
5
2.1428
4
2.1453
5
2.1554
5
2.1377
5
2.1576
2
2.1577
5
2.1383
5
2.1577
2
2.2538
1
2.2277
1
wB97X-D 2.0074
5
2.1989
5
2.1494
5
2.1889
5
2.1352
5
2.1352
5
2.1266
5
2.1336
5
2.1336
5
2.1202
5
2.1341
4
2.1383
5
2.1462
5
2.1311
5
2.1527
2
2.1488
5
2.1318
5
2.1527
2
2.2454
1
2.2211
1
B97D3 2.0264
4
2.2305
4
2.1837
4
2.2191
4
2.1664
4
2.1664
4
2.1595
4
2.1702
4
2.1702
4
2.1542
4
2.1559
5
2.1731
4
2.1801
4
2.1648
4
2.2488
1
2.1831
4
2.1658
4
2.2486
1
2.2773
1
2.1618
5
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 daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2 2.0284
5
2.2252
5
2.1386
5
2.2127
5
2.1434
5
2.1434
5
2.1368
5
2.1396
5
2.1396
5
2.1395
5
2.1646
4
2.1233
5
2.1425
5
2.1162
5
2.1063
5
2.1553
5
2.1183
5
2.1042
5
2.2574
1
2.2012
1
MP2=FULL 2.0270
5
2.2248
5
2.1368
5
2.2102
5
2.1315
5
2.1315
5
2.1243
5
2.1185
5
2.1185
5
2.1051
5
2.1279
4
2.1235
5
2.1405
5
2.1031
5
2.0902
5
2.1519
5
2.1063
5
2.0817
5
2.2526
1
2.1830
1
ROMP2 2.0149
2
2.2252
1
2.1597
2
2.2535
2
2.1659
2
2.1659
2
2.1562
2
2.1611
2
2.1611
2
2.1544
2
2.2472
1
2.1382
2
2.1623
2
2.1305
2
  2.1824
2
    2.2576
1
2.2012
1
MP3         2.1465
5
  2.1396
5
        2.0841
1
2.1050
1
2.0755
1
           
MP3=FULL   2.2174
1
2.1026
1
2.2042
1
2.1581
2
2.0951
1
2.1471
2
2.0810
1
2.0810
1
2.0643
1
  2.0871
1
2.1040
1
2.0664
1
  2.1142
1
2.0694
1
     
MP4   2.2352
5
    2.1525
5
      2.1481
5
    2.1315
5
2.1513
5
2.1223
5
  2.1643
5
2.1255
5
     
MP4=FULL   2.2346
5
    2.1404
5
      2.1267
5
      2.1490
5
2.1088
5
  2.1608
5
2.1129
5
     
B2PLYP 2.0286
5
2.2166
5
2.1549
5
2.2120
5
2.1507
5
2.1507
5
2.1433
5
2.1502
5
2.1502
5
2.1408
5
2.1608
4
2.1438
5
2.1555
5
2.1366
5
  2.1623
5
2.1381
5
  2.2620
1
2.2271
1
B2PLYP=FULL 2.0290
5
2.2163
5
2.1543
5
2.2091
5
2.1439
5
2.1439
5
2.1363
5
2.1399
5
2.1399
5
2.1256
5
2.1432
4
2.1440
5
2.1548
5
2.1320
5
  2.1612
5
2.1340
5
  2.2604
1
2.2207
1
B2PLYP=FULLultrafine 2.0291
5
2.2163
5
2.1544
5
2.2089
5
2.1438
5
2.1440
5
2.1363
5
2.1400
5
2.1400
5
2.1256
5
2.1432
4
2.1440
5
2.1547
5
2.1321
5
  2.1612
5
2.1341
5
  2.2604
1
2.2207
1
Configuration interaction CID   2.2323
5
2.1426
5
2.2214
5
2.1441
5
    2.1396
5
    2.1582
4
  2.1551
4
2.1323
4
        2.2587
1
2.2077
1
CISD   2.2342
5
2.1440
5
2.2239
5
2.1455
5
    2.1410
5
    2.1585
4
  2.1556
4
2.1320
4
        2.2591
1
2.2070
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) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVDZ daug-cc-pVTZ
Quadratic configuration interaction QCISD   2.2399
5
2.1483
5
2.2307
5
2.1521
5
2.1521
5
2.1452
5
2.1475
5
2.1475
5
2.1463
5
2.1691
4
2.1336
5
2.1521
5
2.1242
5
  2.1640
5
2.1261
5
  2.2635
1
2.2076
1
QCISD(T)         2.1547
5
    2.1504
5
    2.1727
4
2.1357
5
2.1540
5
2.1258
5
  2.1666
5
2.1287
5
  2.2653
1
2.2094
1
QCISD(T)=FULL         2.1429
5
  2.1355
5
      2.1383
4
  2.1520
5
2.1143
5
2.1237
2
2.1634
5
2.1180
5
2.1152
2
2.2606
1
2.1933
1
QCISD(TQ)         2.1203
1
                  2.0730
1
2.1320
1
2.0877
1
     
QCISD(TQ)=FULL         2.1101
1
  2.0958
1
                2.1297
1
       
Coupled Cluster CCD   2.2364
5
2.1447
5
2.2264
5
2.1487
5
2.1487
5
2.1417
5
2.1441
5
2.1441
5
2.1441
5
2.1675
4
2.1311
5
2.1490
5
2.1233
5
  2.1611
5
2.1251
5
  2.2616
1
2.2080
1
CCSD         2.1509
5
2.1598
4
2.1546
4
2.1571
4
2.1571
4
2.1455
5
2.1685
4
2.1331
5
2.1513
5
2.1242
5
2.1139
5
2.1632
5
2.1261
5
2.1122
5
2.2624
1
2.2076
1
CCSD=FULL         2.1397
5
        2.1122
5
2.1358
4
2.1344
5
2.1494
5
2.1132
5
2.1214
2
2.1602
5
2.1160
5
2.1125
2
2.2582
1
2.1928
1
CCSD(T)         2.1540
5
2.1540
5
2.1579
4
2.1496
5
2.1603
4
2.1601
4
2.1723
4
2.1352
5
2.1532
5
2.1258
5
2.1359
2
2.1661
5
2.1284
5
2.1336
2
2.2645
1
2.2091
1
CCSD(T)=FULL         2.1422
5
          2.1380
4
2.1365
5
2.1512
5
2.1140
5
2.1233
2
2.1629
5
2.1180
5
2.1148
2
2.2599
1
2.1930
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) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVDZ daug-cc-pVTZ

average calculated bond lengths (Å)
Methods with effective core potentials (select basis sets)
CEP-31G CEP-31G* CEP-121G CEP-121G* LANL2DZ SDD cc-pVTZ-PP aug-cc-pVTZ-PP Def2TZVPP
hartree fock HF 2.1677
5
  2.1693
5
  2.1996
5
5.7187
5
2.1433
4
  2.1336
5
ROHF             2.2308
1
  2.2289
1
density functional LSDA             2.1167
4
   
BLYP             2.1802
4
  2.1787
4
B1B95             2.1352
4
  2.1364
4
B3LYP 2.1988
5
  2.1991
5
  2.2107
5
2.2414
5
2.1567
4
  2.1493
5
B3LYPultrafine             2.1567
4
  2.1573
4
B3PW91             2.1424
4
  2.1437
4
mPW1PW91             2.1371
4
  2.1391
4
M06-2X             2.1510
4
  2.1505
4
PBEPBE             2.1567
4
  2.1479
5
PBEPBEultrafine             2.1567
4
  2.1568
4
PBE1PBE             2.1364
4
  2.1385
4
HSEh1PBE             2.1373
4
  2.1391
4
TPSSh             2.1448
4
  2.1457
4
wB97X-D 2.1735
5
  2.1742
5
  2.1993
5
2.2297
5
2.1362
4
  2.1380
4
B97D3             2.1644
4
  2.1632
4
Moller Plesset perturbation MP2 2.1587
5
  2.1603
5
  2.2059
5
2.2466
5
2.1240
4
  2.1190
5
MP2=FULL             2.1127
4
  2.1309
4
ROMP2             2.1977
1
  2.2039
1
MP3             2.1299
4
   
MP3=FULL             2.1215
4
   
MP4             2.1280
4
   
MP4=FULL             2.1166
4
   
B2PLYP             2.1421
4
  2.1462
4
B2PLYP=FULL             2.1386
4
  2.1457
4
B2PLYP=FULLultrafine             2.1386
4
  2.1457
4
Configuration interaction CID             2.1265
4
  2.1346
4
CISD             2.1263
4
  2.1343
4
Quadratic configuration interaction QCISD             2.1295
4
  2.1392
4
QCISD(T)             2.1310
4
  2.1410
4
QCISD(T)=FULL             2.1209
4
  2.1407
4
Coupled Cluster CCD             2.1290
4
  2.1385
4
CCSD             2.1296
4
  2.1392
4
CCSD=FULL             2.1202
4
  2.1388
4
CCSD(T)             2.1308
4
  2.1407
4
CCSD(T)=FULL             2.1208
4
  2.1404
4
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.