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

using model chemistry: HF/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 HF/6-311G**
 hartrees
Energy at 0K-487.953903
Energy at 298.15K 
HF Energy-487.953903
Nuclear repulsion energy101.291747
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 HF/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 910 827 181.16 2.94 0.73 0.84
2 A1 380 346 29.83 0.67 0.35 0.52
3 B2 914 830 205.84 3.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1102.2 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 1001.4 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 HF/6-311G**
ABC
0.97937 0.30102 0.23025

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/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 1.214 -0.452
F3 0.000 -1.214 -0.452

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.59441.5944
F21.59442.4280
F31.59442.4280

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 99.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.016      
2 F -0.508      
3 F -0.508      


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 1.533 1.533
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.870 0.000 0.000
y 0.000 -25.784 0.000
z 0.000 0.000 -23.913
Traceless
 xyz
x 5.978 0.000 0.000
y 0.000 -4.392 0.000
z 0.000 0.000 -1.586
Polar
3z2-r2-3.172
x2-y26.913
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.463 0.000 0.000
y 0.000 3.480 0.000
z 0.000 0.000 2.625


<r2> (average value of r2) Å2
<r2> 49.217
(<r2>)1/2 7.015

State 2 (3B1)

Jump to S1C1
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-487.865865
Energy at 298.15K-487.746158
HF Energy-487.865865
Nuclear repulsion energy99.847153
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 HF/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 877 797 98.36      
2 A1 293 266 28.57      
3 B2 992 901 198.82      

Unscaled Zero Point Vibrational Energy (zpe) 1080.6 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 981.7 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 HF/6-311G**
ABC
1.35071 0.25160 0.21210

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.975      
2 F -0.488      
3 F -0.488      


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 2.428 2.428
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.244 0.000 0.000
y 0.000 -26.333 0.000
z 0.000 0.000 -20.161
Traceless
 xyz
x 1.003 0.000 0.000
y 0.000 -5.130 0.000
z 0.000 0.000 4.127
Polar
3z2-r28.254
x2-y24.089
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.290 0.000 0.000
y 0.000 2.684 0.000
z 0.000 0.000 1.985


<r2> (average value of r2) Å2
<r2> 52.150
(<r2>)1/2 7.222