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All results from a given calculation for SiHF3 (trifluorosilane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-588.019851
Energy at 298.15K 
HF Energy-588.019851
Nuclear repulsion energy189.022342
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/6-31G**
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 2527 2281 108.44 67.38 0.17 0.29
2 A1 913 824 99.67 2.90 0.00 0.00
3 A1 448 404 95.12 0.48 0.74 0.85
4 E 1082 976 324.38 0.49 0.75 0.86
4 E 1082 976 324.38 0.49 0.75 0.86
5 E 930 839 28.48 8.01 0.75 0.86
5 E 930 839 28.48 8.01 0.75 0.86
6 E 320 289 16.59 0.36 0.75 0.86
6 E 320 289 16.59 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4275.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 3859.3 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/6-31G**
ABC
0.23945 0.23945 0.13768

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.325
H2 0.000 0.000 1.774
F3 0.000 1.466 -0.234
F4 1.269 -0.733 -0.234
F5 -1.269 -0.733 -0.234

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.44951.56871.56871.5687
H21.44952.48652.48652.4865
F31.56872.48652.53862.5386
F41.56872.48652.53862.5386
F51.56872.48652.53862.5386

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.882 H2 Si1 F4 110.882
H2 Si1 F5 110.882 F3 Si1 F4 108.024
F3 Si1 F5 108.024 F4 Si1 F5 108.024
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.622      
2 H -0.179      
3 F -0.481      
4 F -0.481      
5 F -0.481      


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 1.567 1.567
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.159 0.000 0.000
y 0.000 -29.159 0.000
z 0.000 0.000 -25.441
Traceless
 xyz
x -1.859 0.000 0.000
y 0.000 -1.859 0.000
z 0.000 0.000 3.718
Polar
3z2-r27.437
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 2.243 0.000 0.000
y 0.000 2.243 0.000
z 0.000 0.000 2.437


<r2> (average value of r2) Å2
<r2> 81.547
(<r2>)1/2 9.030