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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-589.378995
Energy at 298.15K 
HF Energy-589.378995
Nuclear repulsion energy186.961982
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*
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 2406 2286 91.76 77.67 0.18 0.30
2 A1 863 820 74.20 5.07 0.00 0.00
3 A1 416 395 67.87 0.85 0.72 0.84
4 E 1037 985 245.30 0.48 0.75 0.86
4 E 1037 985 245.30 0.48 0.75 0.86
5 E 855 813 22.89 9.95 0.75 0.86
5 E 855 813 22.89 9.95 0.75 0.86
6 E 296 282 12.03 0.57 0.75 0.86
6 E 296 282 12.03 0.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4030.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 3830.0 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*
ABC
0.23427 0.23427 0.13447

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.325
H2 0.000 0.000 1.792
F3 0.000 1.483 -0.235
F4 1.284 -0.742 -0.235
F5 -1.284 -0.742 -0.235

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46681.58551.58551.5855
H21.46682.51192.51192.5119
F31.58552.51192.56872.5687
F41.58552.51192.56872.5687
F51.58552.51192.56872.5687

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.706 H2 Si1 F4 110.706
H2 Si1 F5 110.706 F3 Si1 F4 108.208
F3 Si1 F5 108.208 F4 Si1 F5 108.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.182      
2 H -0.091      
3 F -0.364      
4 F -0.364      
5 F -0.364      


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 1.349 1.349
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.678 0.000 0.000
y 0.000 -28.678 0.000
z 0.000 0.000 -25.391
Traceless
 xyz
x -1.644 0.000 0.000
y 0.000 -1.644 0.000
z 0.000 0.000 3.287
Polar
3z2-r26.574
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 2.623 0.000 0.000
y 0.000 2.623 0.000
z 0.000 0.000 2.776


<r2> (average value of r2) Å2
<r2> 82.801
(<r2>)1/2 9.100