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

using model chemistry: MP2=FULL/TZVP

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=FULL/TZVP
 hartrees
Energy at 0K-488.543655
Energy at 298.15K 
HF Energy-487.980995
Nuclear repulsion energy99.077921
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=FULL/TZVP
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 837 798 148.60 4.46 0.56 0.72
2 A1 336 320 20.47 0.93 0.40 0.57
3 B2 843 803 194.89 6.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1007.9 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 960.3 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=FULL/TZVP
ABC
0.95379 0.28534 0.21963

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.589
F2 0.000 1.247 -0.458
F3 0.000 -1.247 -0.458

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.62841.6284
F21.62842.4939
F31.62842.4939

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 99.945
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP2=FULL/TZVP
 hartrees
Energy at 0K-488.432205
Energy at 298.15K-488.312419
HF Energy-487.896035
Nuclear repulsion energy97.799882
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=FULL/TZVP
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 807 769 78.69      
2 A1 258 246 20.30      
3 B2 925 881 179.79      

Unscaled Zero Point Vibrational Energy (zpe) 995.1 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 948.0 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=FULL/TZVP
ABC
1.35019 0.23809 0.20240

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability