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All results from a given calculation for SiF2 (Silicon difluoride)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
2 1 yes C2V 3B1

State 1 (1A1)

Jump to S2C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-488.149996
Energy at 298.15K 
HF Energy-487.860796
Nuclear repulsion energy94.427935
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 761 734 129.64 9.95 0.33 0.50
2 A1 306 295 22.75 1.33 0.59 0.75
3 B2 759 732 149.02 8.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 912.7 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 881.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/SDD
ABC
0.82135 0.26672 0.20134

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.635
F2 0.000 1.290 -0.494
F3 0.000 -1.290 -0.494

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.71381.7138
F21.71382.5794
F31.71382.5794

picture of Silicon difluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 97.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-488.040320
Energy at 298.15K-487.920432
HF Energy-487.767669
Nuclear repulsion energy92.560204
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 718 693 51.83      
2 A1 231 223 32.97      
3 B2 834 805 112.24      

Unscaled Zero Point Vibrational Energy (zpe) 891.3 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 860.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/SDD
ABC
1.25868 0.21056 0.18038

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability