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

using model chemistry: G3

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 G3
 hartrees
Energy at 0K-489.060285
Energy at 298.15K-489.055993
HF Energy-487.884672
Nuclear repulsion energy101.381963
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 HF/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 933 879 157.86 2.64 0.73 0.84
2 A1 373 351 26.71 0.68 0.31 0.48
3 B2 950 895 178.46 3.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1127.7 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1062.5 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=FULL/6-31G*
ABC
0.98791 0.28570 0.22161

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.579
F2 0.000 1.246 -0.450
F3 0.000 -1.246 -0.450

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61611.6161
F21.61612.4923
F31.61612.4923

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 99.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-488.939460
Energy at 298.15K-488.935086
HF Energy-487.794616
Nuclear repulsion energy99.758943
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 HF/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 893 841 83.30      
2 A1 296 279 26.76      
3 B2 1021 962 174.85      

Unscaled Zero Point Vibrational Energy (zpe) 1104.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1040.9 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=FULL/6-31G*
ABC
1.41639 0.23625 0.20248

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability