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

using model chemistry: MP3/6-31G*

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 MP3/6-31G*
 hartrees
Energy at 0K-488.304255
Energy at 298.15K-488.184596
HF Energy-487.884174
Nuclear repulsion energy100.143193
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 MP3/6-31G*
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 904 848 129.95      
2 A1 347 326 22.29      
3 B2 929 872 160.98      

Unscaled Zero Point Vibrational Energy (zpe) 1089.6 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 1022.7 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 MP3/6-31G*
ABC
0.98436 0.28998 0.22399

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.580
F2 0.000 1.237 -0.451
F3 0.000 -1.237 -0.451

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61021.6102
F21.61022.4738
F31.61022.4738

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 100.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-488.186800
Energy at 298.15K-488.067061
HF Energy-487.794018
Nuclear repulsion energy98.411354
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 MP3/6-31G*
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 853 800 62.37      
2 A1 280 263 22.38      
3 B2 990 929 144.15      

Unscaled Zero Point Vibrational Energy (zpe) 1061.4 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 996.2 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 MP3/6-31G*
ABC
1.40780 0.23882 0.20418

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability