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

using model chemistry: MP2/3-21G

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 MP2/3-21G
 hartrees
Energy at 0K-485.580351
Energy at 298.15K 
HF Energy-485.300038
Nuclear repulsion energy98.457018
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 MP2/3-21G
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 907 866 69.47 8.75 0.33 0.50
2 A1 353 337 24.27 1.15 0.63 0.78
3 B2 932 889 80.53 6.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1095.8 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 1046.0 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 MP2/3-21G
ABC
0.89039 0.29043 0.21900

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.610
F2 0.000 1.236 -0.474
F3 0.000 -1.236 -0.474

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.64401.6440
F21.64402.4719
F31.64402.4719

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 97.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-485.467004
Energy at 298.15K-485.347259
HF Energy-485.202337
Nuclear repulsion energy95.902810
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 MP2/3-21G
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 823 786 23.26      
2 A1 280 268 28.83      
3 B2 968 924 53.62      

Unscaled Zero Point Vibrational Energy (zpe) 1035.9 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 988.7 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 MP2/3-21G
ABC
1.29383 0.22920 0.19471

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability