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All results from a given calculation for SiH3F (monofluorosilane)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-29.319923
Energy at 298.15K 
HF Energy-29.319923
Nuclear repulsion energy17.920679
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 HF/CEP-31G
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 2281 2056 39.36 252.98 0.05 0.10
2 A1 1005 906 261.40 19.01 0.71 0.83
3 A1 782 705 92.91 6.41 0.52 0.69
4 E 2310 2082 203.95 101.98 0.75 0.86
4 E 2310 2082 203.95 101.98 0.75 0.86
5 E 989 891 130.55 33.21 0.75 0.86
5 E 989 891 130.55 33.21 0.75 0.86
6 E 718 647 73.43 15.52 0.75 0.86
6 E 718 647 73.43 15.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6049.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 5453.3 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 HF/CEP-31G
ABC
2.74651 0.42620 0.42620

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.540
F2 0.000 0.000 -1.165
H3 0.000 1.425 0.974
H4 -1.234 -0.712 0.974
H5 1.234 -0.712 0.974

Atom - Atom Distances (Å)
  Si1 F2 H3 H4 H5
Si11.70531.48921.48921.4892
F21.70532.56982.56982.5698
H31.48922.56982.46782.4678
H41.48922.56982.46782.4678
H51.48922.56982.46782.4678

picture of monofluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 106.917 F2 Si1 H4 106.917
F2 Si1 H5 106.917 H3 Si1 H4 111.900
H3 Si1 H5 111.900 H4 Si1 H5 111.900
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.978      
2 F -0.600      
3 H -0.126      
4 H -0.126      
5 H -0.126      


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 3.252 3.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.742 0.000 0.000
y 0.000 -18.742 0.000
z 0.000 0.000 -21.639
Traceless
 xyz
x 1.448 0.000 0.000
y 0.000 1.448 0.000
z 0.000 0.000 -2.896
Polar
3z2-r2-5.793
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 2.719 0.000 0.000
y 0.000 2.719 0.000
z 0.000 0.000 2.446


<r2> (average value of r2) Å2
<r2> 31.911
(<r2>)1/2 5.649