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Comparison of levels of theory for Ge-F


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 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

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 1.6485
9
1.6755
9
1.7003
9
1.7281
9
1.6995
9
1.6996
9
1.7047
9
1.7015
9
1.7017
9
1.6819
9
1.6886
6
1.6958
9
1.7164
9
1.6875
9
1.6849
9
1.7071
9
1.6880
9
1.6852
9
1.7027
6
1.6879
9
ROHF   1.7027
1
1.7328
1
1.7743
1
1.7409
1
1.7409
1
1.7509
1
1.7488
1
1.7488
1
  1.7397
1
1.7440
1
1.7606
1
1.7313
1
1.7275
1
1.7550
1
1.7326
1
1.7281
1
1.7551
1
1.7325
1
density functional LSDA 1.6464
7
1.6962
4
1.7062
7
1.7342
7
1.7112
7
1.7112
7
1.7196
7
1.7116
7
1.7116
7
1.6867
7
  1.7285
3
1.7223
7
1.6988
7
  1.7216
7
1.7001
7
     
BLYP 1.6721
9
1.7100
9
1.7431
9
1.7775
9
1.7524
9
1.7529
9
1.7663
9
1.7599
9
1.7600
9
1.7277
9
1.7482
6
1.7610
9
1.7655
9
1.7481
9
  1.7614
7
1.7417
7
  1.7651
6
1.7462
6
B1B95 1.6615
9
1.7128
6
1.7160
9
1.7468
9
1.7214
9
1.7214
9
1.7300
9
1.7244
9
1.7246
9
1.6991
9
1.7120
6
1.7218
9
1.7340
9
1.7107
9
  1.7371
8
1.7123
9
  1.7701
2
1.7083
6
B3LYP 1.6598
9
1.6942
9
1.7247
9
1.7568
9
1.7316
9
1.7317
9
1.7427
9
1.7361
9
1.7362
9
1.7086
9
1.7244
6
1.7353
9
1.7444
9
1.7240
9
1.7221
9
1.7464
9
1.7266
9
1.7229
9
1.7405
6
1.7218
6
B3LYPultrafine   1.6893
7
    1.7316
9
1.7243
7
1.7339
7
1.7268
7
  1.7057
6
1.7244
6
1.7257
7
1.7442
9
1.7239
9
  1.7462
9
1.7265
9
  1.7405
6
1.7218
6
B3PW91 1.6636
9
1.6935
9
1.7231
9
1.7531
9
1.7276
9
1.7277
9
1.7362
9
1.7308
9
1.7309
9
1.7042
9
1.7179
6
1.7280
9
1.7405
9
1.7173
9
  1.7302
7
1.7186
9
  1.7340
6
1.7147
6
mPW1PW91 1.6608
9
1.6901
9
1.7190
9
1.7487
9
1.7230
9
1.7231
9
1.7316
9
1.7257
9
1.7258
9
1.7003
9
1.7132
6
1.7229
9
1.7361
9
1.7121
9
  1.7344
9
1.7140
9
  1.7292
6
1.7098
6
M06-2X 1.6615
9
1.6856
9
1.7126
9
1.7446
9
1.7185
9
1.7186
9
1.7268
9
1.7237
9
1.7239
9
1.6996
9
1.7160
9
1.7212
9
1.7332
9
1.7112
9
  1.7303
9
1.7130
9
  1.7267
6
1.7096
6
PBEPBE 1.6722
9
1.7069
9
1.7387
9
1.7706
9
1.7454
9
1.7455
9
1.7568
9
1.7504
9
1.7506
9
1.7204
9
1.7381
6
1.7500
9
1.7582
9
1.7372
9
  1.7614
9
1.7403
9
  1.7551
6
1.7352
6
PBEPBEultrafine   1.7017
7
    1.7452
9
1.7379
7
1.7478
7
1.7408
7
  1.7174
6
1.7381
6
1.7400
7
1.7579
9
1.7371
9
  1.7610
9
1.7401
9
  1.7551
6
1.7352
6
PBE1PBE 1.6598
9
1.7162
6
1.7192
9
1.7489
9
1.7230
9
1.7230
9
1.7317
9
1.7256
9
1.7258
9
1.7005
9
1.7135
6
1.7232
9
1.7363
9
1.7122
9
  1.7346
9
1.7141
9
  1.7295
6
1.7100
6
HSEh1PBE 1.6592
9
1.6900
9
1.7195
9
1.7496
9
1.7240
9
1.7241
9
1.7330
9
1.7268
9
1.7269
9
1.7014
9
1.7145
6
1.7246
9
1.7371
9
1.7136
9
  1.7359
9
1.7155
9
  1.7306
6
1.7113
6
TPSSh 1.6674
7
1.6917
7
1.7207
7
1.7490
7
1.7248
7
1.7249
7
1.7324
7
1.7262
7
1.7265
7
1.7080
9
1.7222
6
1.7232
7
1.7363
7
1.7127
7
1.7106
7
1.7347
7
1.7145
7
1.7112
7
1.7385
6
1.7190
6
wB97X-D 1.6617
7
1.6844
7
1.7210
9
1.7417
7
1.7249
9
1.7177
7
1.7331
9
1.7188
7
1.7272
9
1.6955
7
1.7154
6
1.7241
9
1.7368
9
1.7140
9
1.7035
7
1.7272
7
1.7156
9
1.7038
7
1.7313
6
1.7119
6
B97D3 1.6874
7
1.7104
9
1.7294
7
1.7612
7
1.7418
9
1.7344
7
1.7511
9
1.7370
7
1.7448
9
1.7096
7
1.7370
9
1.7450
9
1.7463
7
1.7312
9
1.7213
7
1.7461
7
1.7355
9
1.7218
7
1.7499
6
1.7350
9
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 1.6669
9
1.6917
9
1.7186
9
1.7660
9
1.7452
9
1.7426
9
1.7551
9
1.7486
9
1.7467
9
1.7401
9
1.7494
6
1.7218
9
1.7375
9
1.7080
9
1.7035
9
1.7385
9
1.7110
9
1.7011
9
1.7330
6
1.7053
6
MP2=FULL 1.6662
9
1.6909
9
1.7189
9
1.7522
9
1.7225
9
1.7225
9
1.7341
9
1.7234
9
1.7232
9
1.6916
9
1.7136
6
1.7219
9
1.7369
9
1.7042
9
1.6939
9
1.7367
9
1.7041
9
1.6893
9
1.7305
6
1.6956
6
ROMP2 1.6507
1
1.7458
1
1.7458
1
1.8149
1
1.7855
1
1.7855
1
1.8067
1
1.7970
1
1.7970
1
1.7796
1
1.8121
1
1.7660
1
1.7744
1
1.7465
1
  1.7840
1
    1.7832
1
1.7503
1
MP3         1.7300
8
  1.7401
8
        1.6693
1
1.6964
1
1.6605
1
           
MP3=FULL   1.6601
1
1.6864
1
1.7211
1
1.7051
6
1.6835
1
1.7121
6
1.6777
1
1.6777
1
1.6540
1
  1.6703
1
1.6963
1
1.6590
1
  1.6876
1
1.6584
1
     
MP4   1.6940
8
    1.7445
8
      1.7493
8
    1.7360
3
1.7526
3
1.7085
8
  1.7556
3
1.7256
3
     
MP4=FULL   1.7035
3
    1.7361
3
      1.7391
3
      1.7519
3
1.7160
3
  1.7539
3
1.7185
3
     
B2PLYP 1.6646
7
1.6872
7
1.7151
7
1.7537
7
1.7359
9
1.7276
7
1.7380
7
1.7309
7
1.7310
7
1.7198
9
1.7339
6
1.7199
7
1.7328
7
1.7164
9
  1.7324
7
1.7192
9
  1.7358
6
1.7146
6
B2PLYP=FULL 1.6642
7
1.6870
7
1.7152
7
1.7466
7
1.7193
7
1.7194
7
1.7294
7
1.7214
7
1.7215
7
1.6954
7
1.7192
6
1.7200
7
1.7326
7
1.7071
7
  1.7319
7
1.7088
7
  1.7351
6
1.7115
6
B2PLYP=FULLultrafine 1.6643
7
1.6870
7
1.7153
7
1.7465
7
1.7264
9
1.7193
7
1.7293
7
1.7213
7
1.7213
7
1.6953
7
1.7192
6
1.7199
7
1.7403
9
1.7155
9
  1.7318
7
1.7176
9
  1.7351
6
1.7115
6
Configuration interaction CID   1.6984
5
1.7253
5
1.7798
5
1.7498
5
    1.7568
5
    1.7874
2
  1.7613
2
1.7290
2
        1.7618
2
1.7301
2
CISD   1.6870
9
1.7129
9
1.7565
9
1.7295
9
    1.7321
9
    1.7288
6
  1.7228
6
1.6891
6
        1.7157
6
1.6882
6
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   1.6928
9
1.7354
5
1.7671
9
1.7439
9
1.7416
9
1.7521
9
1.7457
9
1.7456
9
1.7395
9
1.7457
6
1.7185
9
1.7379
9
1.7040
9
  1.7351
9
1.7059
9
  1.7289
6
1.7000
6
QCISD(T)         1.7435
9
    1.7399
7
    1.7506
6
1.7223
9
1.7402
9
1.7077
9
  1.7384
9
1.7106
9
  1.7762
2
1.7443
2
QCISD(T)=FULL         1.7166
7
  1.7256
7
      1.7133
6
  1.7320
7
1.6965
7
1.7059
3
1.7279
7
1.6964
7
1.7017
3
1.7738
2
1.7332
2
Coupled Cluster CCD   1.6885
9
1.7150
9
1.7614
9
1.7388
9
1.7364
9
1.7464
9
1.7402
9
1.7401
9
1.7318
9
1.7417
6
1.7133
9
1.7324
9
1.7000
9
  1.7297
9
1.7017
9
  1.7243
6
1.6965
6
CCSD         1.7410
9
1.7346
6
1.7443
6
1.7379
6
1.7377
6
1.7370
9
1.7437
6
1.7159
9
1.7353
9
1.7021
9
1.7138
5
1.7321
9
1.7038
9
1.7111
5
1.7699
2
1.7373
2
CCSD=FULL         1.7196
9
        1.6885
9
1.7069
6
1.7161
9
1.7347
9
1.6989
9
1.7058
5
1.7306
9
1.6980
9
1.7011
5
1.7677
2
1.7271
2
CCSD(T)         1.7625
5
1.7585
3
1.7719
3
1.7672
3
1.7669
3
1.7530
3
1.8039
2
1.7403
5
1.7566
5
1.7241
5
1.7192
5
1.7580
5
1.7287
5
1.7172
5
1.7750
2
1.7433
2
CCSD(T)=FULL         1.7226
9
          1.7124
6
1.7214
9
1.7386
9
1.7034
9
1.7113
5
1.7356
9
1.7035
9
1.7069
5
1.7727
2
1.7324
2
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 1.7323
9
  1.7339
9
  1.7244
9
1.7593
9
1.6737
5
  1.6876
9
ROHF             1.7305
1
  1.7330
1
density functional LSDA             1.6984
5
   
BLYP             1.7369
5
  1.7459
6
B1B95             1.6987
5
  1.7091
6
B3LYP 1.7604
9
  1.7626
9
  1.7548
9
1.7872
9
1.7122
5
  1.7255
9
B3LYPultrafine             1.7122
5
  1.7219
6
B3PW91             1.7056
5
  1.7152
6
mPW1PW91             1.7003
5
  1.7104
6
M06-2X             1.6998
5
  1.7097
6
PBEPBE             1.7261
5
  1.7387
9
PBEPBEultrafine             1.7261
5
  1.7357
6
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
B97D3             1.7223
5
  1.7305
6
Moller Plesset perturbation MP2 1.7742
9
  1.7758
9
  1.7642
9
1.7984
9
1.6964
5
  1.7125
9
MP2=FULL             1.6925
5
  1.7098
6
ROMP2             1.7465
1
  1.7533
1
MP3             1.6856
5
   
MP3=FULL             1.6824
5
   
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
CISD             1.6792
5
  1.6921
6
Quadratic configuration interaction QCISD             1.6913
5
  1.7047
6
QCISD(T)             1.6953
5
  1.7088
6
QCISD(T)=FULL             1.6916
5
  1.7089
6
Coupled Cluster CCD             1.6879
5
  1.7011
6
CCSD             1.6898
5
  1.7031
6
CCSD=FULL             1.6863
5
  1.7031
6
CCSD(T)             1.7465
1
  1.7461
2
CCSD(T)=FULL             1.6909
5
  1.7081
6
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.