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All results from a given calculation for SiF4 (Silicon tetrafluoride)

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-401.708764
Energy at 298.15K-401.710383
Nuclear repulsion energy144.886680
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/LANL2DZ
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 742 668 0.00      
2 E 234 211 0.00      
2 E 234 211 0.00      
3 T2 999 899 237.77      
3 T2 999 899 237.77      
3 T2 999 899 237.77      
4 T2 359 323 101.85      
4 T2 359 323 101.85      
4 T2 359 323 101.85      

Unscaled Zero Point Vibrational Energy (zpe) 2642.6 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 2378.1 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 HF/LANL2DZ
ABC
0.12790 0.12790 0.12790

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.000
F2 0.931 0.931 0.931
F3 -0.931 -0.931 0.931
F4 -0.931 0.931 -0.931
F5 0.931 -0.931 -0.931

Atom - Atom Distances (Å)
  Si1 F2 F3 F4 F5
Si11.61291.61291.61291.6129
F21.61292.63392.63392.6339
F31.61292.63392.63392.6339
F41.61292.63392.63392.6339
F51.61292.63392.63392.6339

picture of Silicon tetrafluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 109.471 F2 Si1 F4 109.471
F2 Si1 F5 109.471 F3 Si1 F4 109.471
F3 Si1 F5 109.471 F4 Si1 F5 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 2.315      
2 F -0.579      
3 F -0.579      
4 F -0.579      
5 F -0.579      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.953 0.000 0.000
y 0.000 -34.953 0.000
z 0.000 0.000 -34.953
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.889 0.000 0.000
y 0.000 1.889 0.000
z 0.000 0.000 1.889


<r2> (average value of r2) Å2
<r2> 115.486
(<r2>)1/2 10.746