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

using model chemistry: MP4/3-21G

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 MP4/3-21G
 hartrees
Energy at 0K-485.593187
Energy at 298.15K-485.473525
HF Energy-485.299665
Nuclear repulsion energy98.106222
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 MP4/3-21G
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 885 858        
2 A1 346 336        
3 B2 913 885        

Unscaled Zero Point Vibrational Energy (zpe) 1071.9 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 1039.6 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 MP4/3-21G
ABC
0.88172 0.28877 0.21753

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.613
F2 0.000 1.240 -0.477
F3 0.000 -1.240 -0.477

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.65011.6501
F21.65012.4790
F31.65012.4790

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 97.381
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-485.474516
Energy at 298.15K-485.354753
HF Energy-485.202008
Nuclear repulsion energy95.604979
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 MP4/3-21G
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 805 780        
2 A1 274 266        
3 B2 948 920        

Unscaled Zero Point Vibrational Energy (zpe) 1013.5 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 982.9 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 MP4/3-21G
ABC
1.28358 0.22790 0.19354

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.508
F2 0.000 1.395 -0.395
F3 0.000 -1.395 -0.395

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.66191.6619
F21.66192.7905
F31.66192.7905

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 114.189
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability