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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-488.317959
Energy at 298.15K-488.198286
HF Energy-487.883790
Nuclear repulsion energy99.734417
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 QCISD/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 885 834 116.37      
2 A1 340 320 20.72      
3 B2 914 860 147.81      

Unscaled Zero Point Vibrational Energy (zpe) 1069.3 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 1006.6 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 QCISD/6-31G**
ABC
0.97939 0.28716 0.22205

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.581
F2 0.000 1.243 -0.452
F3 0.000 -1.243 -0.452

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61651.6165
F21.61652.4860
F31.61652.4860

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 100.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-488.198952
Energy at 298.15K-488.079200
HF Energy-487.793601
Nuclear repulsion energy98.002485
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 QCISD/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 835 786 53.96      
2 A1 275 258 20.36      
3 B2 972 915 129.62      

Unscaled Zero Point Vibrational Energy (zpe) 1040.7 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 979.7 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 QCISD/6-31G**
ABC
1.40600 0.23631 0.20231

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability