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

using model chemistry: CCSD(T)/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 CCSD(T)/6-31G*
 hartrees
Energy at 0K-488.324181
Energy at 298.15K 
HF Energy-487.883735
Nuclear repulsion energy99.682072
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 CCSD(T)/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 885 851        
2 A1 337 324        
3 B2 915 880        

Unscaled Zero Point Vibrational Energy (zpe) 1068.2 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 1027.7 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 CCSD(T)/6-31G*
ABC
0.98405 0.28603 0.22161

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 1.245 -0.451
F3 0.000 -1.245 -0.451

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61691.6169
F21.61692.4909
F31.61692.4909

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 100.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-488.203912
Energy at 298.15K-488.084155
HF Energy-487.793528
Nuclear repulsion energy97.938527
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 CCSD(T)/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 833 801        
2 A1 274 263        
3 B2 971 934        

Unscaled Zero Point Vibrational Energy (zpe) 1038.4 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 999.0 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 CCSD(T)/6-31G*
ABC
1.40935 0.23574 0.20196

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability