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

using model chemistry: PBEPBE/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 PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-489.032030
Energy at 298.15K 
HF Energy-489.032030
Nuclear repulsion energy98.639232
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 PBEPBE/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 793 787 117.31 5.35 0.50 0.66
2 A1 311 309 13.87 0.94 0.18 0.30
3 B2 806 800 164.10 7.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 954.7 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 948.5 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 PBEPBE/aug-cc-pVTZ
ABC
0.96185 0.28031 0.21706

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.587
F2 0.000 1.258 -0.456
F3 0.000 -1.258 -0.456

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.63411.6341
F21.63412.5161
F31.63412.5161

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 100.683
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.795      
2 F -0.397      
3 F -0.397      


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 1.247 1.247
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.285 0.000 0.000
y 0.000 -25.227 0.000
z 0.000 0.000 -23.555
Traceless
 xyz
x 4.106 0.000 0.000
y 0.000 -3.308 0.000
z 0.000 0.000 -0.799
Polar
3z2-r2-1.597
x2-y24.942
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.441 0.000 0.000
y 0.000 4.785 0.000
z 0.000 0.000 4.411


<r2> (average value of r2) Å2
<r2> 51.434
(<r2>)1/2 7.172

State 2 (3B1)

Jump to S1C1
Energy calculated at PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-488.921257
Energy at 298.15K-488.801425
HF Energy-488.921257
Nuclear repulsion energy97.445669
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 PBEPBE/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 762 757 62.22      
2 A1 243 241 10.17      
3 B2 877 871 136.98      

Unscaled Zero Point Vibrational Energy (zpe) 940.6 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 934.5 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 PBEPBE/aug-cc-pVTZ
ABC
1.34472 0.23612 0.20085

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.763      
2 F -0.382      
3 F -0.382      


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 1.141 1.141
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.813 0.000 0.000
y 0.000 -25.034 0.000
z 0.000 0.000 -21.482
Traceless
 xyz
x -0.555 0.000 0.000
y 0.000 -2.386 0.000
z 0.000 0.000 2.941
Polar
3z2-r25.882
x2-y21.221
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.969 0.000 0.000
y 0.000 4.927 0.000
z 0.000 0.000 4.610


<r2> (average value of r2) Å2
<r2> 54.590
(<r2>)1/2 7.388