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

using model chemistry: CBS-Q

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 CBS-Q
 hartrees
Energy at 0K-488.687797
Energy at 298.15K-488.683521
HF Energy-487.868454
Nuclear repulsion energy100.844935
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 CBS-Q
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 919 919 167.62      
2 A1 373 373 29.16      
3 B2 934 934 185.54      

Unscaled Zero Point Vibrational Energy (zpe) 1113.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1113.2 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 CBS-Q
ABC
0.97975 0.28551 0.22108

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.582
F2 0.000 1.219 -0.453
F3 0.000 -1.219 -0.453

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.59901.5990
F21.59902.4378
F31.59902.4378

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 99.329
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-488.568266
Energy at 298.15K-488.563904
HF Energy-487.778751
Nuclear repulsion energy99.249880
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 CBS-Q
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 880 880 87.65      
2 A1 294 294 28.68      
3 B2 1003 1003 177.22      

Unscaled Zero Point Vibrational Energy (zpe) 1088.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1088.6 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 CBS-Q
ABC
1.38785 0.23695 0.20240

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability