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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-586.546024
Energy at 298.15K 
HF Energy-586.546024
Nuclear repulsion energy183.352739
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 mPW1PW91/3-21G
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 2415 2305 119.04 91.09 0.19 0.31
2 A1 856 817 53.80 7.30 0.00 0.00
3 A1 397 379 81.34 1.66 0.75 0.86
4 E 1052 1004 186.96 0.94 0.75 0.86
4 E 1052 1004 186.93 0.94 0.75 0.86
5 E 876 836 34.52 16.09 0.75 0.86
5 E 876 836 34.52 16.09 0.75 0.86
6 E 295 282 15.38 1.00 0.75 0.86
6 E 295 282 15.37 1.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4056.2 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 3872.1 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 mPW1PW91/3-21G
ABC
0.22521 0.22521 0.13097

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.358
H2 0.000 0.000 1.823
F3 0.000 1.503 -0.253
F4 1.301 -0.751 -0.253
F5 -1.301 -0.751 -0.253

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46501.62211.62211.6221
H21.46502.56242.56242.5624
F31.62212.56242.60292.6029
F41.62212.56242.60292.6029
F51.62212.56242.60292.6029

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 112.108 H2 Si1 F4 112.108
H2 Si1 F5 112.108 F3 Si1 F4 106.710
F3 Si1 F5 106.710 F4 Si1 F5 106.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.396      
2 H -0.193      
3 F -0.401      
4 F -0.401      
5 F -0.401      


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 2.075 2.075
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.029 0.000 0.000
y 0.000 -30.029 0.000
z 0.000 0.000 -25.749
Traceless
 xyz
x -2.140 0.000 0.000
y 0.000 -2.140 0.000
z 0.000 0.000 4.279
Polar
3z2-r28.559
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 2.215 0.000 0.000
y 0.000 2.216 0.000
z 0.000 0.000 2.426


<r2> (average value of r2) Å2
<r2> 85.680
(<r2>)1/2 9.256