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

using model chemistry: B3PW91/6-31G**

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 B3PW91/6-31G**
 hartrees
Energy at 0K-489.129628
Energy at 298.15K 
HF Energy-489.129628
Nuclear repulsion energy99.806696
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 B3PW91/6-31G**
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 870 833 110.01      
2 A1 329 315 17.04      
3 B2 901 863 133.47      

Unscaled Zero Point Vibrational Energy (zpe) 1049.6 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 1005.9 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 B3PW91/6-31G**
ABC
0.98711 0.28664 0.22214

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.579
F2 0.000 1.244 -0.450
F3 0.000 -1.244 -0.450

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61481.6148
F21.61482.4882
F31.61482.4882

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 100.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.734      
2 F -0.367      
3 F -0.367      


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 0.952 0.952
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.282 0.000 0.000
y 0.000 -24.337 0.000
z 0.000 0.000 -22.989
Traceless
 xyz
x 4.381 0.000 0.000
y 0.000 -3.201 0.000
z 0.000 0.000 -1.180
Polar
3z2-r2-2.359
x2-y25.055
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.525 0.000 0.000
y 0.000 3.885 0.000
z 0.000 0.000 3.121


<r2> (average value of r2) Å2
<r2> 50.074
(<r2>)1/2 7.076

State 2 (3B1)

Jump to S1C1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-489.016090
Energy at 298.15K-488.896315
HF Energy-489.016090
Nuclear repulsion energy98.067173
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 B3PW91/6-31G**
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 816 782 45.51      
2 A1 263 252 16.41      
3 B2 958 918 119.20      

Unscaled Zero Point Vibrational Energy (zpe) 1018.3 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 976.0 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 B3PW91/6-31G**
ABC
1.43851 0.23505 0.20204

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** 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 1.560 1.560
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.461 0.000 0.000
y 0.000 -24.528 0.000
z 0.000 0.000 -20.007
Traceless
 xyz
x -0.193 0.000 0.000
y 0.000 -3.295 0.000
z 0.000 0.000 3.488
Polar
3z2-r26.976
x2-y22.068
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.854 0.000 0.000
y 0.000 3.236 0.000
z 0.000 0.000 2.548


<r2> (average value of r2) Å2
<r2> 53.650
(<r2>)1/2 7.325