return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for SiF3 (Silicon trifluoride radical)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-75.495391
Energy at 298.15K-75.496431
HF Energy-75.495391
Nuclear repulsion energy58.618398
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/CEP-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 869 781 98.07      
2 A1 426 382 86.99      
3 E 988 887 227.22      
3 E 988 887 227.22      
4 E 298 267 16.43      
4 E 298 267 16.43      

Unscaled Zero Point Vibrational Energy (zpe) 1933.2 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 1736.0 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 HF/CEP-31G*
ABC
0.24779 0.24779 0.13656

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.382
F2 0.000 1.472 -0.198
F3 1.275 -0.736 -0.198
F4 -1.275 -0.736 -0.198

Atom - Atom Distances (Å)
  Si1 F2 F3 F4
Si11.58181.58181.5818
F21.58182.54912.5491
F31.58182.54912.5491
F41.58182.54912.5491

picture of Silicon trifluoride radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 107.366 F2 Si1 F4 107.366
F3 Si1 F4 107.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.980      
2 F -0.327      
3 F -0.327      
4 F -0.327      


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 1.719 1.719
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.061 0.000 0.000
y 0.000 -28.061 0.000
z 0.000 0.000 -23.810
Traceless
 xyz
x -2.126 0.000 0.000
y 0.000 -2.126 0.000
z 0.000 0.000 4.251
Polar
3z2-r28.503
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 2.930 0.000 0.000
y 0.000 2.930 0.000
z 0.000 0.000 2.035


<r2> (average value of r2) Å2
<r2> 63.532
(<r2>)1/2 7.971