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 SiHF3 (trifluorosilane)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-589.343825
Energy at 298.15K 
HF Energy-589.343825
Nuclear repulsion energy185.026098
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 PBEPBEultrafine/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 2314 2276 88.21 83.79 0.18 0.31
2 A1 825 811 62.82 6.59 0.00 0.00
3 A1 399 393 55.48 1.07 0.71 0.83
4 E 1000 983 214.17 0.56 0.75 0.86
4 E 1000 983 214.16 0.56 0.75 0.86
5 E 821 808 16.03 10.54 0.75 0.86
5 E 821 808 16.03 10.54 0.75 0.86
6 E 286 281 9.97 0.69 0.75 0.86
6 E 286 281 9.97 0.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3875.3 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 3811.3 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 PBEPBEultrafine/6-31G*
ABC
0.22944 0.22944 0.13158

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.328
H2 0.000 0.000 1.807
F3 0.000 1.499 -0.237
F4 1.298 -0.750 -0.237
F5 -1.298 -0.750 -0.237

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47971.60201.60201.6020
H21.47972.53492.53492.5349
F31.60202.53492.59682.5968
F41.60202.53492.59682.5969
F51.60202.53492.59682.5969

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.624 H2 Si1 F4 110.624
H2 Si1 F5 110.624 F3 Si1 F4 108.294
F3 Si1 F5 108.294 F4 Si1 F5 108.294
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.024      
2 H -0.073      
3 F -0.317      
4 F -0.317      
5 F -0.317      


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 1.247 1.247
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.640 0.000 0.000
y 0.000 -28.640 0.000
z 0.000 0.000 -25.568
Traceless
 xyz
x -1.536 0.000 0.000
y 0.000 -1.536 0.000
z 0.000 0.000 3.072
Polar
3z2-r26.144
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 2.855 0.000 0.000
y 0.000 2.855 0.000
z 0.000 0.000 2.974


<r2> (average value of r2) Å2
<r2> 84.222
(<r2>)1/2 9.177