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

using model chemistry: B1B95/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at B1B95/cc-pVDZ
 hartrees
Energy at 0K-689.058990
Energy at 298.15K-689.060613
Nuclear repulsion energy264.011080
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 B1B95/cc-pVDZ
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 762 732 0.00      
2 E 232 223 0.00      
2 E 232 223 0.00      
3 T2 1015 976 193.29      
3 T2 1015 976 193.29      
3 T2 1015 976 193.29      
4 T2 350 336 50.35      
4 T2 350 336 50.35      
4 T2 350 336 50.35      

Unscaled Zero Point Vibrational Energy (zpe) 2661.1 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 2557.8 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 B1B95/cc-pVDZ
ABC
0.12889 0.12889 0.12889

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.000
F2 0.928 0.928 0.928
F3 -0.928 -0.928 0.928
F4 -0.928 0.928 -0.928
F5 0.928 -0.928 -0.928

Atom - Atom Distances (Å)
  Si1 F2 F3 F4 F5
Si11.60671.60671.60671.6067
F21.60672.62382.62382.6238
F31.60672.62382.62382.6238
F41.60672.62382.62382.6238
F51.60672.62382.62382.6238

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 B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.080      
2 F -0.270      
3 F -0.270      
4 F -0.270      
5 F -0.270      


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 -32.352 0.000 0.000
y 0.000 -32.352 0.000
z 0.000 0.000 -32.352
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 2.542 0.000 0.000
y 0.000 2.542 0.000
z 0.000 0.000 2.542


<r2> (average value of r2) Å2
<r2> 113.144
(<r2>)1/2 10.637