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Comparison of levels of theory for Ga-Br


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 2.3943
1
PM6 2.3539
1
composite G2 2.3660
1
G3 2.4090
1
G3B3 2.4162
1
G4 2.4010
1
CBS-Q 2.3672
1

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 2.0546
1
2.4430
1
2.3586
1
2.4251
1
2.3660
1
2.3660
1
2.3696
1
2.4050
1
2.4050
1
2.3485
1
2.3972
1
2.4047
1
2.4075
1
2.4003
1
2.3970
1
2.4236
1
2.4023
1
2.3972
1
2.4236
1
2.4023
1
density functional BLYP 2.0678
1
2.4277
1
2.3788
1
2.4421
1
2.3955
1
2.3955
1
2.4021
1
2.4316
1
2.4316
1
2.3753
1
2.4231
1
2.4331
1
2.4355
1
2.4239
1
  2.4485
1
2.4259
1
  2.4484
1
2.4257
1
B1B95 2.0316
1
2.3424
1
2.3424
1
2.3980
1
2.3468
1
2.3468
1
2.3480
1
2.3792
1
2.3792
1
2.3269
1
2.3704
1
2.3810
1
2.3842
1
2.3738
1
  2.3949
1
2.3754
1
    2.3753
1
B3LYP 2.0284
1
2.4193
1
2.3600
1
2.4221
1
2.3732
1
2.3732
1
2.3778
1
2.4078
1
2.4078
1
2.3535
1
2.3995
1
2.4091
1
2.4118
1
2.4011
1
2.4002
1
2.4243
1
2.4029
1
2.3998
1
2.4242
1
2.4028
1
B3LYPultrafine   2.4193
1
    2.3732
1
2.3732
1
2.3778
1
2.4078
1
  2.3535
1
2.3995
1
2.4091
1
2.4118
1
2.4011
1
  2.4243
1
2.4029
1
  2.4242
1
2.4028
1
B3PW91 2.0351
1
2.4175
1
2.3510
1
2.4074
1
2.3569
1
2.3569
1
2.3581
1
2.3878
1
2.3878
1
2.3363
1
2.3790
1
2.3890
1
2.3946
1
2.3815
1
  2.4044
1
2.3829
1
  2.4041
1
2.3829
1
mPW1PW91 2.0317
1
2.4154
1
2.3471
1
2.4027
1
2.3515
1
2.3515
1
2.3529
1
2.3818
1
2.3818
1
2.3308
1
2.3733
1
2.3834
1
2.3888
1
2.3759
1
  2.3991
1
2.3774
1
  2.3988
1
2.3774
1
M06-2X 2.0033
1
2.4119
1
2.3490
1
2.4170
1
2.3610
1
2.3610
1
2.3635
1
2.4001
1
2.4001
1
2.3462
1
2.3923
1
2.4008
1
2.4032
1
2.3963
1
  2.4175
1
2.3979
1
  2.4173
1
2.3978
1
PBEPBE 2.0621
1
2.4199
1
2.3626
1
2.4191
1
2.3690
1
2.3690
1
2.3720
1
2.4004
1
2.4004
1
2.3469
1
2.3912
1
2.4028
1
2.4071
1
2.3938
1
  2.4175
1
2.3955
1
  2.4173
1
2.3954
1
PBEPBEultrafine   2.4199
1
    2.3690
1
2.3690
1
2.3720
1
2.4004
1
  2.3469
1
2.3912
1
2.4028
1
2.4071
1
2.3938
1
  2.4175
1
2.3955
1
  2.4173
1
2.3954
1
PBE1PBE 2.0279
1
2.3464
1
2.3464
1
2.4021
1
2.3496
1
2.3496
1
2.3516
1
2.3807
1
2.3807
1
2.3291
1
2.3721
1
2.3827
1
2.3873
1
2.3752
1
  2.3978
1
2.3768
1
  2.3975
1
2.3767
1
HSEh1PBE 2.0286
1
2.4146
1
2.3469
1
2.4033
1
2.3520
1
2.3520
1
2.3536
1
2.3830
1
2.3830
1
2.3311
1
2.3742
1
2.3850
1
2.3897
1
2.3771
1
  2.4000
1
2.3786
1
  2.3997
1
2.3786
1
TPSSh 2.0450
1
2.4200
1
2.3533
1
2.4090
1
2.3576
1
2.3576
1
2.3585
1
2.3884
1
2.3884
1
2.3356
1
2.3786
1
2.3894
1
2.3959
1
2.3806
1
2.3797
1
2.4054
1
2.3821
1
2.3795
1
2.4049
1
2.3821
1
wB97X-D 2.0426
1
2.4080
1
2.3401
1
2.3967
1
2.3448
1
2.3448
1
2.3464
1
2.3771
1
2.3771
1
2.3236
1
2.3678
1
2.3799
1
2.3841
1
2.3713
1
2.3689
1
2.3966
1
2.3732
1
2.3685
1
2.3964
1
2.3732
1
B97D3   2.4401
1
2.3756
1
2.4310
1
2.3823
1
2.3823
1
2.3861
1
2.4192
1
2.4192
1
2.3629
1
2.4106
1
2.4204
1
2.4223
1
2.4107
1
2.4109
1
2.4341
1
2.4125
1
2.4100
1
2.4340
1
2.4124
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
Moller Plesset perturbation MP2 2.0390
1
2.4423
1
2.3414
1
2.4298
1
2.3719
1
2.3719
1
2.3769
1
2.3877
1
2.3877
1
2.3462
1
2.3921
1
2.3665
1
2.3831
1
2.3448
1
2.3448
1
2.4095
1
2.3490
1
2.3414
1
2.4101
1
2.3482
1
MP2=FULL 2.0364
1
2.4411
1
2.3379
1
2.4271
1
2.3566
1
2.3566
1
2.3608
1
2.3651
1
2.3651
1
2.2959
1
2.3533
1
2.3663
1
2.3792
1
2.3210
1
2.3294
1
2.4050
1
2.3253
1
2.3187
1
2.4050
1
2.3216
1
B2PLYP 2.0976
1
2.4270
1
2.3503
1
2.4234
1
2.3705
1
2.3705
1
2.3752
1
2.3991
1
2.3991
1
2.3494
1
2.3969
1
2.3909
1
2.3982
1
2.3791
1
  2.4160
1
2.3823
1
  2.4161
1
2.3819
1
B2PLYP=FULL 2.0992
1
2.4266
1
2.3492
1
2.4214
1
2.3640
1
2.3640
1
2.3684
1
2.3896
1
2.3896
1
2.3307
1
2.3806
1
2.3908
1
2.3968
1
2.3715
1
  2.4144
1
2.3743
1
  2.4144
1
2.3728
1
B2PLYP=FULLultrafine 2.0992
1
2.4266
1
2.3492
1
2.4214
1
2.3640
1
2.3640
1
2.3684
1
2.3896
1
2.3896
1
2.3307
1
2.3806
1
2.3908
1
2.3968
1
2.3715
1
  2.4144
1
2.3743
1
  2.4144
1
2.3728
1
Configuration interaction CID   2.4469
1
2.3462
1
2.4347
1
2.3724
1
    2.3909
1
    2.3934
1
  2.3901
1
2.3585
1
        2.4146
1
2.3607
1
CISD   2.4487
1
2.3467
1
2.4363
1
2.3731
1
    2.3918
1
    2.3937
1
  2.3906
1
2.3575
1
        2.4148
1
2.3595
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   2.4516
1
2.3480
1
2.4398
1
2.3767
1
2.3767
1
2.3818
1
2.3935
1
2.3935
1
2.3516
1
2.3977
1
2.3778
1
2.3917
1
2.3563
1
  2.4181
1
2.3601
1
  2.4186
1
2.3591
1
QCISD(T)         2.3774
1
    2.3940
1
    2.3990
1
2.3771
1
2.3911
1
2.3549
1
  2.4185
1
2.3598
1
  2.4186
1
2.3592
1
QCISD(T)=FULL         2.3639
1
  2.3686
1
      2.3668
1
  2.3873
1
2.3361
1
2.3433
1
2.4143
1
2.3406
1
2.3355
1
2.4137
1
2.3358
1
Coupled Cluster CCD   2.4480
1
2.3461
1
2.4363
1
2.3745
1
2.3745
1
2.3797
1
2.3910
1
2.3910
1
2.3501
1
2.3963
1
2.3771
1
2.3895
1
2.3570
1
  2.4163
1
2.3609
1
  2.4168
1
2.3600
1
CCSD         2.3755
1
2.3755
1
2.3805
1
2.3923
1
2.3923
1
2.3508
1
2.3969
1
2.3773
1
2.3907
1
2.3564
1
2.3551
1
2.4168
1
2.3601
1
2.3518
1
2.4174
1
2.3591
1
CCSD=FULL         2.3630
1
        2.3062
1
2.3666
1
2.3784
1
2.3872
1
2.3373
1
2.3448
1
2.4130
1
2.3408
1
2.3348
1
2.4130
1
2.3367
1
CCSD(T)         2.3765
1
2.3765
1
2.3818
1
2.3931
1
2.3931
1
2.3517
1
2.3983
1
2.3764
1
2.3903
1
2.3546
1
2.3542
1
2.4175
1
2.3595
1
2.3514
1
2.4177
1
2.3593
1
CCSD(T)=FULL         2.3632
1
          2.3662
1
2.3781
1
2.3865
1
2.3358
1
2.3429
1
2.4134
1
2.3403
1
2.3351
1
2.4129
1
2.3355
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 2.4287
1
  2.4287
1
  2.4997
1
2.4960
1
2.3921
1
  2.3983
1
density functional LSDA             2.3427
1
   
BLYP             2.4265
1
  2.4233
1
B1B95             2.3738
1
  2.3727
1
B3LYP 2.4384
1
  2.4384
1
  2.4937
1
2.4907
1
2.4012
1
  2.4001
1
B3LYPultrafine             2.4012
1
  2.4001
1
B3PW91             2.3821
1
  2.3806
1
mPW1PW91             2.3758
1
  2.3752
1
M06-2X             2.3985
1
  2.3938
1
PBEPBE             2.3962
1
  2.3933
1
PBEPBEultrafine             2.3962
1
  2.3933
1
PBE1PBE             2.3746
1
  2.3743
1
HSEh1PBE             2.3767
1
  2.3764
1
TPSSh             2.3821
1
  2.3806
1
wB97X-D 2.4047
1
  2.4047
1
  2.4713
1
2.4649
1
2.3711
1
  2.3703
1
B97D3             2.4158
1
  2.4109
1
Moller Plesset perturbation MP2 2.3931
1
  2.3931
1
  2.5004
1
2.5076
1
2.3414
1
  2.3548
1
MP2=FULL             2.3284
1
  2.3524
1
MP3             2.3521
1
   
MP3=FULL             2.3434
1
   
MP4             2.3472
1
   
MP4=FULL             2.3342
1
   
B2PLYP             2.3765
1
  2.3816
1
B2PLYP=FULL             2.3726
1
  2.3808
1
B2PLYP=FULLultrafine             2.3726
1
  2.3808
1
Configuration interaction CID             2.3537
1
  2.3654
1
CISD             2.3528
1
  2.3646
1
Quadratic configuration interaction QCISD             2.3520
1
  2.3659
1
QCISD(T)             2.3508
1
  2.3652
1
QCISD(T)=FULL             2.3400
1
  2.3642
1
Coupled Cluster CCD             2.3525
1
  2.3662
1
CCSD             2.3521
1
  2.3658
1
CCSD=FULL             2.3422
1
  2.3649
1
CCSD(T)             2.3505
1
  2.3647
1
CCSD(T)=FULL             2.3397
1
  2.3636
1
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.