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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBEPBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-589.374585
Energy at 298.15K 
HF Energy-589.374585
Nuclear repulsion energy183.791348
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/6-31+G**
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 2312 2285 63.70 107.48 0.13 0.23
2 A1 794 785 78.10 8.94 0.00 0.00
3 A1 387 383 61.09 1.17 0.66 0.79
4 E 939 929 261.16 0.83 0.75 0.86
4 E 939 929 261.15 0.83 0.75 0.86
5 E 790 781 14.07 8.80 0.75 0.86
5 E 790 781 14.07 8.80 0.75 0.86
6 E 275 272 12.36 0.87 0.75 0.86
6 E 275 272 12.36 0.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3750.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 3708.2 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/6-31+G**
ABC
0.22636 0.22636 0.12981

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.332
H2 0.000 0.000 1.806
F3 0.000 1.509 -0.239
F4 1.307 -0.755 -0.239
F5 -1.307 -0.755 -0.239

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47461.61361.61361.6136
H21.47462.54172.54172.5417
F31.61362.54172.61452.6145
F41.61362.54172.61452.6145
F51.61362.54172.61452.6145

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.698 H2 Si1 F4 110.698
H2 Si1 F5 110.698 F3 Si1 F4 108.217
F3 Si1 F5 108.217 F4 Si1 F5 108.217
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.853      
2 H -0.058      
3 F -0.265      
4 F -0.265      
5 F -0.265      


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 1.574 1.574
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.081 0.000 0.000
y 0.000 -30.081 0.000
z 0.000 0.000 -26.159
Traceless
 xyz
x -1.961 0.000 0.000
y 0.000 -1.961 0.000
z 0.000 0.000 3.921
Polar
3z2-r27.843
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 3.523 0.000 0.000
y 0.000 3.524 0.000
z 0.000 0.000 3.553


<r2> (average value of r2) Å2
<r2> 85.832
(<r2>)1/2 9.265