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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBE1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/3-21G
 hartrees
Energy at 0K-586.361355
Energy at 298.15K 
HF Energy-586.361355
Nuclear repulsion energy187.557415
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 PBE1PBE/3-21G
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 2441 2344 100.63 64.83 0.18 0.31
2 A1 911 875 67.45 4.46 0.00 0.00
3 A1 424 407 70.98 1.05 0.75 0.85
4 E 1113 1069 217.02 0.47 0.75 0.86
4 E 1113 1069 217.01 0.47 0.75 0.86
5 E 888 853 32.28 10.41 0.75 0.86
5 E 888 853 32.28 10.41 0.75 0.86
6 E 311 298 12.79 0.65 0.75 0.86
6 E 311 298 12.79 0.65 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4198.9 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 4032.6 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 PBE1PBE/3-21G
ABC
0.23575 0.23575 0.13601

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.333
H2 0.000 0.000 1.797
F3 0.000 1.475 -0.239
F4 1.277 -0.737 -0.239
F5 -1.277 -0.737 -0.239

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46411.58161.58161.5816
H21.46412.51392.51392.5139
F31.58162.51392.55422.5542
F41.58162.51392.55422.5542
F51.58162.51392.55422.5542

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 111.195 H2 Si1 F4 111.195
H2 Si1 F5 111.195 F3 Si1 F4 107.694
F3 Si1 F5 107.694 F4 Si1 F5 107.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.018      
2 H -0.124      
3 F -0.298      
4 F -0.298      
5 F -0.298      


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 1.329 1.329
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.496 0.000 0.000
y 0.000 -28.496 0.000
z 0.000 0.000 -25.425
Traceless
 xyz
x -1.535 0.000 0.000
y 0.000 -1.535 0.000
z 0.000 0.000 3.070
Polar
3z2-r26.141
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 2.141 0.000 0.000
y 0.000 2.142 -0.000
z 0.000 -0.000 2.270


<r2> (average value of r2) Å2
<r2> 82.195
(<r2>)1/2 9.066