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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBEPBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-589.513117
Energy at 298.15K 
HF Energy-589.513117
Nuclear repulsion energy185.840582
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 PBEPBE/6-311+G(3df,2p)
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 2298 2279 53.15 103.81 0.11 0.20
2 A1 798 791 70.54 8.65 0.00 0.01
3 A1 396 393 56.51 0.76 0.55 0.71
4 E 940 932 230.45 0.85 0.75 0.86
4 E 940 932 230.45 0.85 0.75 0.86
5 E 789 783 14.11 5.22 0.75 0.86
5 E 789 783 14.11 5.22 0.75 0.86
6 E 284 282 10.09 0.56 0.75 0.86
6 E 284 282 10.09 0.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3759.0 cm-1
Scaled (by 0.9918) Zero Point Vibrational Energy (zpe) 3728.1 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 PBEPBE/6-311+G(3df,2p)
ABC
0.23146 0.23146 0.13255

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)

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 1.793
F3 0.000 1.494 -0.235
F4 1.294 -0.747 -0.235
F5 -1.294 -0.747 -0.235

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46911.59481.59481.5948
H21.46912.51862.51862.5186
F31.59482.51862.58732.5873
F41.59482.51862.58732.5873
F51.59482.51862.58732.5873

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.507 H2 Si1 F4 110.507
H2 Si1 F5 110.507 F3 Si1 F4 108.416
F3 Si1 F5 108.416 F4 Si1 F5 108.416
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.180      
2 H -0.055      
3 F -0.375      
4 F -0.375      
5 F -0.375      


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 1.324 1.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.584 0.000 0.000
y 0.000 -29.584 0.000
z 0.000 0.000 -26.176
Traceless
 xyz
x -1.704 0.000 0.000
y 0.000 -1.704 0.000
z 0.000 0.000 3.408
Polar
3z2-r26.815
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 3.771 0.000 0.000
y 0.000 3.771 0.000
z 0.000 0.000 3.824


<r2> (average value of r2) Å2
<r2> 84.186
(<r2>)1/2 9.175