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

using model chemistry: B97D3/6-31G*

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 B97D3/6-31G*
 hartrees
Energy at 0K-489.134492
Energy at 298.15K 
HF Energy-489.134492
Nuclear repulsion energy98.875919
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 B97D3/6-31G*
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 828 812 95.77 4.34 0.57 0.73
2 A1 316 310 14.33 0.82 0.40 0.57
3 B2 862 845 119.68 6.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1003.3 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 983.6 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 B97D3/6-31G*
ABC
0.98491 0.27900 0.21741

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.580
F2 0.000 1.261 -0.451
F3 0.000 -1.261 -0.451

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.62861.6286
F21.62862.5220
F31.62862.5220

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 101.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.693      
2 F -0.347      
3 F -0.347      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.873 0.873
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.437 0.000 0.000
y 0.000 -24.287 0.000
z 0.000 0.000 -22.924
Traceless
 xyz
x 4.169 0.000 0.000
y 0.000 -3.107 0.000
z 0.000 0.000 -1.062
Polar
3z2-r2-2.124
x2-y24.851
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.549 0.000 0.000
y 0.000 4.018 0.000
z 0.000 0.000 3.263


<r2> (average value of r2) Å2
<r2> 50.864
(<r2>)1/2 7.132

State 2 (3B1)

Jump to S1C1
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-489.017941
Energy at 298.15K-488.898114
HF Energy-489.017941
Nuclear repulsion energy 
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 B97D3/6-31G*
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 768 753 36.30      
2 A1 250 245 11.96      
3 B2 893 875 93.08      

Unscaled Zero Point Vibrational Energy (zpe) 955.2 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 936.5 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 B97D3/6-31G*
ABC
1.40356 0.22915 0.19699

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.486
F2 0.000 1.391 -0.378
F3 0.000 -1.391 -0.378

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.63751.6375
F21.63752.7829
F31.63752.7829

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 116.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.629      
2 F -0.315      
3 F -0.315      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.305 1.305
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.440 0.000 0.000
y 0.000 -24.183 0.000
z 0.000 0.000 -20.100
Traceless
 xyz
x -0.298 0.000 0.000
y 0.000 -2.914 0.000
z 0.000 0.000 3.212
Polar
3z2-r26.424
x2-y21.744
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.861 0.000 0.000
y 0.000 3.507 0.000
z 0.000 0.000 2.681


<r2> (average value of r2) Å2
<r2> 54.611
(<r2>)1/2 7.390