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

using model chemistry: MP4/cc-pVTZ

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 MP4/cc-pVTZ
 hartrees
Energy at 0K-488.629393
Energy at 298.15K-488.509703
HF Energy-487.997436
Nuclear repulsion energy99.893355
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 MP4/cc-pVTZ
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 847 821        
2 A1 337 327        
3 B2 868 841        

Unscaled Zero Point Vibrational Energy (zpe) 1026.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 994.5 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 MP4/cc-pVTZ
ABC
0.99112 0.28682 0.22245

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.578
F2 0.000 1.244 -0.449
F3 0.000 -1.244 -0.449

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61321.6132
F21.61322.4874
F31.61322.4874

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 100.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP4/cc-pVTZ
 hartrees
Energy at 0K-488.511633
Energy at 298.15K-488.391874
HF Energy-487.915269
Nuclear repulsion energy98.758765
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 MP4/cc-pVTZ
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 824 799        
2 A1 271 262        
3 B2 941 912        

Unscaled Zero Point Vibrational Energy (zpe) 1017.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 986.5 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 MP4/cc-pVTZ
ABC
1.34763 0.24452 0.20697

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.496
F2 0.000 1.347 -0.385
F3 0.000 -1.347 -0.385

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60961.6096
F21.60962.6940
F31.60962.6940

picture of Silicon difluoride state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 113.621
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability