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All results from a given calculation for SiH3F (monofluorosilane)

using model chemistry: PBEPBEultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-390.913646
Energy at 298.15K 
HF Energy-390.913646
Nuclear repulsion energy62.527940
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 PBEPBEultrafine/6-31G(2df,p)
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 2174 2152 30.54 187.95 0.04 0.08
2 A1 970 960 180.61 4.02 0.57 0.73
3 A1 857 848 23.28 6.36 0.34 0.51
4 E 2183 2161 130.22 51.20 0.75 0.86
4 E 2183 2161 130.24 51.19 0.75 0.86
5 E 918 908 68.25 12.87 0.75 0.86
5 E 918 908 68.26 12.88 0.75 0.86
6 E 701 694 45.76 8.08 0.75 0.86
6 E 701 694 45.76 8.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5802.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 5742.3 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 PBEPBEultrafine/6-31G(2df,p)
ABC
2.78083 0.46728 0.46728

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.502
F2 0.000 0.000 -1.109
H3 0.000 1.416 0.984
H4 -1.226 -0.708 0.984
H5 1.226 -0.708 0.984

Atom - Atom Distances (Å)
  Si1 F2 H3 H4 H5
Si11.61191.49551.49551.4955
F21.61192.52712.52712.5271
H31.49552.52712.45262.4526
H41.49552.52712.45262.4526
H51.49552.52712.45262.4526

picture of monofluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 108.770 F2 Si1 H4 108.770
F2 Si1 H5 108.770 H3 Si1 H4 110.163
H3 Si1 H5 110.163 H4 Si1 H5 110.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.106      
2 F -0.171      
3 H 0.022      
4 H 0.022      
5 H 0.022      


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 1.036 1.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.524 0.000 0.000
y 0.000 -19.524 0.000
z 0.000 0.000 -20.244
Traceless
 xyz
x 0.360 0.000 0.000
y 0.000 0.360 0.000
z 0.000 0.000 -0.720
Polar
3z2-r2-1.439
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 3.739 0.000 0.000
y 0.000 3.739 0.000
z 0.000 0.000 3.337


<r2> (average value of r2) Å2
<r2> 35.874
(<r2>)1/2 5.989