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

using model chemistry: MP2/6-311G*

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 MP2/6-311G*
 hartrees
Energy at 0K-488.441933
Energy at 298.15K 
HF Energy-487.953251
Nuclear repulsion energy99.851511
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 MP2/6-311G*
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 868 825 137.60 4.06 0.59 0.75
2 A1 349 332 23.11 0.89 0.40 0.58
3 B2 884 840 173.86 5.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1050.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 998.3 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 MP2/6-311G*
ABC
0.98041 0.28803 0.22262

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.581
F2 0.000 1.241 -0.452
F3 0.000 -1.241 -0.452

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61481.6148
F21.61482.4822
F31.61482.4822

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 100.457
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-488.329799
Energy at 298.15K-488.210041
HF Energy-487.865183
Nuclear repulsion energy98.372557
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 MP2/6-311G*
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 827 786 69.07      
2 A1 273 259 22.74      
3 B2 953 906 158.18      

Unscaled Zero Point Vibrational Energy (zpe) 1026.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 975.4 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 MP2/6-311G*
ABC
1.38464 0.23983 0.20442

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.510
F2 0.000 1.332 -0.397
F3 0.000 -1.332 -0.397

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61131.6113
F21.61132.6635
F31.61132.6635

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 111.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability