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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-488.681286
Energy at 298.15K 
HF Energy-487.997752
Nuclear repulsion energy100.167184
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/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 860 816 127.03 4.01 0.52 0.69
2 A1 343 325 18.08 0.59 0.27 0.42
3 B2 878 833 166.91 4.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1040.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 987.3 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/cc-pVTZ
ABC
0.99353 0.28882 0.22377

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.577
F2 0.000 1.239 -0.449
F3 0.000 -1.239 -0.449

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60911.6091
F21.60912.4788
F31.60912.4788

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 100.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-488.568849
Energy at 298.15K-488.449105
HF Energy-487.915695
Nuclear repulsion energy99.106431
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/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 840 797 74.69      
2 A1 277 263 14.97      
3 B2 955 906 154.30      

Unscaled Zero Point Vibrational Energy (zpe) 1035.4 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 983.0 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/cc-pVTZ
ABC
1.33902 0.24736 0.20879

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability