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/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-589.538830
Energy at 298.15K 
HF Energy-589.538830
Nuclear repulsion energy186.193518
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/Def2TZVPP
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 2290 2290 57.44 93.80 0.12 0.22
2 A1 811 811 72.65 6.57 0.00 0.00
3 A1 398 398 57.74 0.92 0.62 0.77
4 E 956 956 229.13 0.56 0.75 0.86
4 E 956 956 229.13 0.56 0.75 0.86
5 E 797 797 15.99 6.29 0.75 0.86
5 E 797 797 15.99 6.29 0.75 0.86
6 E 286 286 10.16 0.60 0.75 0.86
6 E 286 286 10.16 0.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3788.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3788.1 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/Def2TZVPP
ABC
0.23235 0.23235 0.13316

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.324
H2 0.000 0.000 1.795
F3 0.000 1.490 -0.235
F4 1.291 -0.745 -0.235
F5 -1.291 -0.745 -0.235

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47071.59171.59171.5917
H21.47072.51802.51802.5180
F31.59172.51802.58142.5814
F41.59172.51802.58142.5814
F51.59172.51802.58142.5814

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.557 H2 Si1 F4 110.557
H2 Si1 F5 110.557 F3 Si1 F4 108.364
F3 Si1 F5 108.364 F4 Si1 F5 108.364
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.834      
2 H -0.067      
3 F -0.256      
4 F -0.256      
5 F -0.256      


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 1.274 1.274
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.326 0.000 0.000
y 0.000 -29.326 0.000
z 0.000 0.000 -26.078
Traceless
 xyz
x -1.624 0.000 0.000
y 0.000 -1.624 0.000
z 0.000 0.000 3.248
Polar
3z2-r26.497
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 3.451 0.000 0.000
y 0.000 3.451 0.000
z 0.000 0.000 3.523


<r2> (average value of r2) Å2
<r2> 83.793
(<r2>)1/2 9.154