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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-488.452125
Energy at 298.15K-488.332457
HF Energy-487.953415
Nuclear repulsion energy100.038932
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 870 833 137.00      
2 A1 353 338 23.66      
3 B2 884 847 174.64      

Unscaled Zero Point Vibrational Energy (zpe) 1053.7 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 1008.8 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/6-311G*
ABC
0.97579 0.29037 0.22378

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.582
F2 0.000 1.236 -0.453
F3 0.000 -1.236 -0.453

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61251.6125
F21.61252.4722
F31.61252.4722

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 100.095
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-488.334721
Energy at 298.15K-488.214959
HF Energy-487.865251
Nuclear repulsion energy98.445849
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 823 788 65.84      
2 A1 272 260 22.39      
3 B2 948 907 150.87      

Unscaled Zero Point Vibrational Energy (zpe) 1021.2 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 977.7 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/6-311G*
ABC
1.37490 0.24085 0.20495

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability