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

using model chemistry: B3LYP/aug-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 B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-489.388945
Energy at 298.15K 
HF Energy-489.388945
Nuclear repulsion energy99.606826
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 B3LYP/aug-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 824 797 133.35 4.30 0.59 0.74
2 A1 329 318 16.85 0.84 0.14 0.24
3 B2 833 806 177.58 6.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 993.2 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 960.9 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 B3LYP/aug-cc-pVTZ
ABC
0.97205 0.28715 0.22167

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.584
F2 0.000 1.243 -0.454
F3 0.000 -1.243 -0.454

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61901.6190
F21.61902.4860
F31.61902.4860

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 100.301
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.874      
2 F -0.437      
3 F -0.437      


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 1.337 1.337
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.028 0.000 0.000
y 0.000 -25.317 0.000
z 0.000 0.000 -23.631
Traceless
 xyz
x 4.446 0.000 0.000
y 0.000 -3.488 0.000
z 0.000 0.000 -0.958
Polar
3z2-r2-1.916
x2-y25.289
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.345 0.000 0.000
y 0.000 4.526 0.000
z 0.000 0.000 4.163


<r2> (average value of r2) Å2
<r2> 50.647
(<r2>)1/2 7.117

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-489.272166
Energy at 298.15K-489.152368
HF Energy-489.272166
Nuclear repulsion energy98.385915
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 B3LYP/aug-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 794 768 73.35      
2 A1 255 247 12.37      
3 B2 907 878 151.48      

Unscaled Zero Point Vibrational Energy (zpe) 977.9 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 946.1 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 B3LYP/aug-cc-pVTZ
ABC
1.34920 0.24196 0.20517

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.833      
2 F -0.417      
3 F -0.417      


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 -23.581 0.000 0.000
y 0.000 -25.241 0.000
z 0.000 0.000 -21.336
Traceless
 xyz
x -0.293 0.000 0.000
y 0.000 -2.783 0.000
z 0.000 0.000 3.076
Polar
3z2-r26.151
x2-y21.660
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.717 0.000 0.000
y 0.000 4.629 0.000
z 0.000 0.000 4.377


<r2> (average value of r2) Å2
<r2> 53.718
(<r2>)1/2 7.329