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: HSEh1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-581.636123
Energy at 298.15K 
HF Energy-581.636123
Nuclear repulsion energy182.524969
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 HSEh1PBE/STO-3G
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 2605 2300 49.92 57.01 0.31 0.47
2 A1 796 703 22.84 5.11 0.00 0.00
3 A1 360 318 41.45 1.51 0.75 0.86
4 E 1014 896 152.62 1.02 0.75 0.86
4 E 1014 896 152.62 1.02 0.75 0.86
5 E 852 752 22.11 9.80 0.75 0.86
5 E 852 752 22.11 9.80 0.75 0.86
6 E 272 240 7.71 1.25 0.75 0.86
6 E 272 240 7.71 1.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4018.2 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 3548.4 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 HSEh1PBE/STO-3G
ABC
0.22318 0.22318 0.12853

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.345
H2 0.000 0.000 1.798
F3 0.000 1.517 -0.246
F4 1.314 -0.758 -0.246
F5 -1.314 -0.758 -0.246

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.45291.62801.62801.6280
H21.45292.54522.54522.5452
F31.62802.54522.62742.6274
F41.62802.54522.62742.6274
F51.62802.54522.62742.6274

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 111.282 H2 Si1 F4 111.282
H2 Si1 F5 111.282 F3 Si1 F4 107.602
F3 Si1 F5 107.602 F4 Si1 F5 107.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.896      
2 H -0.135      
3 F -0.254      
4 F -0.254      
5 F -0.254      


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 0.870 0.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.486 0.000 0.000
y 0.000 -25.486 0.000
z 0.000 0.000 -23.274
Traceless
 xyz
x -1.106 0.000 0.000
y 0.000 -1.106 0.000
z 0.000 0.000 2.212
Polar
3z2-r24.425
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 1.599 0.000 0.000
y 0.000 1.599 0.000
z 0.000 0.000 1.493


<r2> (average value of r2) Å2
<r2> 84.119
(<r2>)1/2 9.172