Geometry Comparison
CH2FCl (fluorochloromethane)
distance is atom 1 (C) to atom 3 (Cl)
Experimental bond length is 1.762 Å
original data displayed. press to display differences
differences displayed. press to display original data
Calculated bond length in Å
Methods with predefined basis sets
| semi-empirical |
PM6 |
1.791 |
| composite |
G2 |
1.772 |
| G3 |
1.772 |
| G3B3 |
1.802 |
| CBS-Q |
1.774 |
Calculated bond length in 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 |
cc-pV(T+d)Z |
| hartree fock |
HF |
1.825 |
1.886 |
1.787 |
1.837 |
1.772 |
1.772 |
1.768 |
1.774 |
1.774 |
1.775 |
1.766 |
1.782 |
1.777 |
1.773 |
1.771 |
1.777 |
1.772 |
1.769 |
| density functional |
LSDA |
1.878 |
1.896 |
1.801 |
1.846 |
1.780 |
1.779 |
1.769 |
1.775 |
1.776 |
1.772 |
|
|
1.778 |
1.766 |
|
1.771 |
|
|
| SVWN |
|
1.897 |
|
|
1.780 |
|
1.768 |
|
|
|
|
|
|
|
|
|
|
|
| BLYP |
1.921 |
1.961 |
1.863 |
1.904 |
1.832 |
1.832 |
1.819 |
1.828 |
1.829 |
1.827 |
|
|
1.829 |
1.818 |
|
|
|
|
| B1B95 |
1.868 |
1.897 |
1.802 |
1.847 |
|
1.782 |
1.772 |
1.779 |
1.780 |
1.778 |
|
|
1.781 |
1.772 |
|
1.774 |
|
|
| B3LYP |
1.886 |
1.923 |
1.825 |
1.870 |
1.802 |
1.802 |
1.793 |
1.800 |
1.801 |
1.800 |
|
1.802 |
1.802 |
1.793 |
|
1.798 |
1.792 |
1.788 |
| B3LYPultrafine |
|
|
|
|
1.802 |
|
1.792 |
|
|
|
|
|
|
|
|
|
|
|
| B3PW91 |
1.874 |
1.906 |
1.809 |
1.854 |
1.788 |
1.788 |
1.780 |
1.786 |
1.786 |
1.785 |
|
|
1.789 |
1.780 |
|
|
|
|
| mPW1PW91 |
1.866 |
1.897 |
1.802 |
1.847 |
1.782 |
1.782 |
1.774 |
1.780 |
1.780 |
1.780 |
|
|
1.783 |
1.775 |
|
|
|
|
| M06-2X |
|
|
|
|
1.783 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| PBEPBE |
1.899 |
1.931 |
1.834 |
1.877 |
1.806 |
1.806 |
1.795 |
1.803 |
1.803 |
1.802 |
|
|
1.804 |
1.795 |
|
|
1.792 |
|
| HSEh1PBE |
|
|
|
|
1.782 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Moller Plesset perturbation |
MP2FC |
1.852 |
1.920 |
1.806 |
1.868 |
1.769 |
1.768 |
1.761 |
1.771 |
1.769 |
1.775 |
|
1.777 |
1.781 |
1.770 |
|
1.780 |
|
1.765 |
| MP2FU |
1.852 |
1.921 |
1.806 |
1.868 |
1.768 |
1.766 |
1.759 |
1.769 |
1.767 |
1.767 |
|
|
1.779 |
1.764 |
|
|
|
1.759 |
| MP4 |
|
1.937 |
|
|
1.779 |
|
|
|
1.778 |
|
|
|
|
|
|
|
|
|
| B2PLYP |
|
|
|
|
1.788 |
|
1.779 |
|
|
|
|
|
|
|
|
|
|
|
| Configuration interaction |
CID |
|
1.906 |
1.798 |
1.858 |
1.766 |
|
|
1.768 |
|
|
|
|
|
|
|
|
|
|
| CISD |
|
1.912 |
1.800 |
1.862 |
1.768 |
|
|
1.769 |
|
|
|
|
|
|
|
|
|
|
| Quadratic configuration interaction |
QCISD |
|
1.930 |
1.811 |
1.877 |
1.775 |
1.774 |
1.767 |
1.777 |
1.775 |
1.780 |
|
|
1.786 |
|
|
|
|
|
| QCISD(T) |
|
|
|
|
1.779 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Coupled Cluster |
CCD |
|
1.918 |
1.806 |
1.869 |
1.771 |
1.770 |
1.764 |
1.773 |
1.771 |
1.777 |
|
|
1.782 |
|
|
|
|
|
| CCSD |
|
|
|
|
1.774 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| CCSD(T) |
|
|
|
|
1.778 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Calculated bond length in Å
Methods with effective core potentials (select basis sets)
|
|
CEP-31G |
CEP-31G* |
CEP-121G |
CEP-121G* |
LANL2DZ |
SDD |
| hartree fock |
HF |
1.832 |
1.782 |
1.829 |
1.781 |
1.829 |
1.834 |
| density functional |
B1B95 |
1.851 |
1.795 |
|
|
|
|
| B3LYP |
1.871 |
1.813 |
1.865 |
1.810 |
1.860 |
1.862 |
| Moller Plesset perturbation |
MP2FC |
1.864 |
1.786 |
1.859 |
1.784 |
1.857 |
1.867 |
Values that are outliers may reflect different atom numbering for
different levels of theory.
Please use the error
report form to report problems.
