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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-586.731933
Energy at 298.15K 
HF Energy-586.731933
Nuclear repulsion energy188.006648
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 B1B95/3-21G
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 2443 2337 100.29 64.44 0.18 0.31
2 A1 913 874 68.55 4.43 0.00 0.00
3 A1 423 405 71.17 1.06 0.75 0.86
4 E 1116 1068 220.07 0.46 0.75 0.86
4 E 1116 1068 219.92 0.45 0.75 0.86
5 E 888 849 32.90 10.35 0.75 0.86
5 E 888 849 32.93 10.33 0.75 0.86
6 E 310 296 12.88 0.65 0.75 0.86
6 E 310 296 12.87 0.65 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4203.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 4021.0 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 B1B95/3-21G
ABC
0.23687 0.23687 0.13671

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.333
H2 0.000 0.000 1.792
F3 0.000 1.471 -0.239
F4 1.274 -0.735 -0.239
F5 -1.274 -0.735 -0.239

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.45961.57801.57801.5780
H21.45962.50782.50782.5078
F31.57802.50782.54772.5477
F41.57802.50782.54772.5477
F51.57802.50782.54772.5477

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 111.232 H2 Si1 F4 111.232
H2 Si1 F5 111.232 F3 Si1 F4 107.654
F3 Si1 F5 107.654 F4 Si1 F5 107.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.017      
2 H -0.124      
3 F -0.298      
4 F -0.298      
5 F -0.298      


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 1.328 1.328
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.373 0.000 0.000
y 0.000 -28.373 0.000
z 0.000 0.000 -25.326
Traceless
 xyz
x -1.524 0.000 0.000
y 0.000 -1.524 0.000
z 0.000 0.000 3.047
Polar
3z2-r26.094
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 2.124 0.000 0.000
y 0.000 2.127 -0.001
z 0.000 -0.001 2.256


<r2> (average value of r2) Å2
<r2> 81.804
(<r2>)1/2 9.045