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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBE1PBE/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-589.409994
Energy at 298.15K 
HF Energy-589.409994
Nuclear repulsion energy188.492671
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/6-31G(2df,p)
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 2350 2249 63.51 68.78 0.15 0.26
2 A1 858 821 68.27 5.34 0.00 0.00
3 A1 418 400 60.05 0.57 0.68 0.81
4 E 1020 977 210.34 0.38 0.75 0.86
4 E 1020 977 210.35 0.38 0.75 0.86
5 E 831 796 23.73 5.58 0.75 0.86
5 E 831 796 23.73 5.57 0.75 0.86
6 E 301 288 10.27 0.36 0.75 0.86
6 E 301 288 10.27 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3965.9 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 3795.4 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 PBE1PBE/6-31G(2df,p)
ABC
0.23813 0.23813 0.13667

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.321
H2 0.000 0.000 1.786
F3 0.000 1.471 -0.233
F4 1.274 -0.736 -0.233
F5 -1.274 -0.736 -0.233

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46481.57201.57201.5720
H21.46482.49802.49802.4980
F31.57202.49802.54802.5480
F41.57202.49802.54802.5480
F51.57202.49802.54802.5480

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.638 H2 Si1 F4 110.638
H2 Si1 F5 110.638 F3 Si1 F4 108.279
F3 Si1 F5 108.279 F4 Si1 F5 108.279
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.548      
2 H 0.020      
3 F -0.189      
4 F -0.189      
5 F -0.189      


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 1.148 1.148
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.282 0.000 0.000
y 0.000 -28.282 0.000
z 0.000 0.000 -25.451
Traceless
 xyz
x -1.415 0.000 0.000
y 0.000 -1.415 0.000
z 0.000 0.000 2.831
Polar
3z2-r25.661
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 3.028 0.000 0.000
y 0.000 3.029 0.000
z 0.000 0.000 3.145


<r2> (average value of r2) Å2
<r2> 81.603
(<r2>)1/2 9.033