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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBEPBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-581.505804
Energy at 298.15K 
HF Energy-581.505804
Nuclear repulsion energy180.292301
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/STO-3G
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 2456 2244 74.28 64.10 0.31 0.48
2 A1 764 698 18.76 5.69 0.00 0.00
3 A1 334 306 30.54 1.68 0.75 0.86
4 E 971 887 136.78 0.81 0.75 0.86
4 E 971 887 136.78 0.81 0.75 0.86
5 E 795 727 19.86 9.88 0.75 0.86
5 E 795 727 19.86 9.88 0.75 0.86
6 E 251 229 5.26 1.28 0.75 0.86
6 E 251 229 5.26 1.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3793.7 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 3465.9 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/STO-3G
ABC
0.21776 0.21776 0.12530

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.348
H2 0.000 0.000 1.821
F3 0.000 1.536 -0.248
F4 1.331 -0.768 -0.248
F5 -1.331 -0.768 -0.248

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47281.64781.64781.6478
H21.47282.57652.57652.5765
F31.64782.57652.66112.6611
F41.64782.57652.66112.6611
F51.64782.57652.66112.6611

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 111.185 H2 Si1 F4 111.185
H2 Si1 F5 111.185 F3 Si1 F4 107.704
F3 Si1 F5 107.704 F4 Si1 F5 107.704
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.774      
2 H -0.131      
3 F -0.214      
4 F -0.214      
5 F -0.214      


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 0.634 0.634
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.111 0.000 0.000
y 0.000 -25.111 0.000
z 0.000 0.000 -23.438
Traceless
 xyz
x -0.837 0.000 0.000
y 0.000 -0.837 0.000
z 0.000 0.000 1.674
Polar
3z2-r23.347
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 1.754 0.000 0.000
y 0.000 1.754 0.000
z 0.000 0.000 1.600


<r2> (average value of r2) Å2
<r2> 85.734
(<r2>)1/2 9.259