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

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-485.562049
Energy at 298.15K-485.442423
HF Energy-485.300399
Nuclear repulsion energy98.940780
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 CID/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 929 865 85.64      
2 A1 362 337 27.75      
3 B2 948 883 92.51      

Unscaled Zero Point Vibrational Energy (zpe) 1119.3 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 1042.7 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 CID/3-21G
ABC
0.89213 0.29459 0.22146

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.609
F2 0.000 1.227 -0.474
F3 0.000 -1.227 -0.474

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.63671.6367
F21.63672.4544
F31.63672.4544

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 97.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-485.450554
Energy at 298.15K-485.330820
HF Energy-485.202643
Nuclear repulsion energy96.271166
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 CID/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 837 780 27.85      
2 A1 284 265 32.40      
3 B2 981 914 57.43      

Unscaled Zero Point Vibrational Energy (zpe) 1051.1 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 979.2 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 CID/3-21G
ABC
1.29550 0.23145 0.19637

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability