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All results from a given calculation for SiH3F (monofluorosilane)

using model chemistry: PBEPBE/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 PBEPBE/3-21G*
 hartrees
Energy at 0K-388.917768
Energy at 298.15K 
HF Energy-388.917768
Nuclear repulsion energy62.282852
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/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2221 2118 39.36 165.05 0.03 0.07
2 A1 1057 1008 216.55 15.05 0.55 0.71
3 A1 906 864 5.28 8.23 0.52 0.68
4 E 2226 2122 161.63 51.89 0.75 0.86
4 E 2226 2122 161.66 51.89 0.75 0.86
5 E 896 854 83.30 24.77 0.75 0.86
5 E 896 854 83.30 24.77 0.75 0.86
6 E 753 718 63.23 9.48 0.75 0.86
6 E 753 718 63.23 9.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5966.3 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 5688.9 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/3-21G*
ABC
2.80938 0.46203 0.46203

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.501
F2 0.000 0.000 -1.117
H3 0.000 1.409 1.012
H4 -1.220 -0.704 1.012
H5 1.220 -0.704 1.012

Atom - Atom Distances (Å)
  Si1 F2 H3 H4 H5
Si11.61821.49851.49851.4985
F21.61822.55282.55282.5528
H31.49852.55282.44012.4401
H41.49852.55282.44012.4401
H51.49852.55282.44012.4401

picture of monofluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 109.925 F2 Si1 H4 109.925
F2 Si1 H5 109.925 H3 Si1 H4 109.014
H3 Si1 H5 109.014 H4 Si1 H5 109.014
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.485      
2 F -0.260      
3 H -0.075      
4 H -0.075      
5 H -0.075      


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 0.893 0.893
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.763 0.000 0.000
y 0.000 -19.763 0.000
z 0.000 0.000 -20.496
Traceless
 xyz
x 0.366 0.000 0.000
y 0.000 0.366 0.000
z 0.000 0.000 -0.733
Polar
3z2-r2-1.466
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 3.044 0.000 0.000
y 0.000 3.044 0.000
z 0.000 0.000 2.756


<r2> (average value of r2) Å2
<r2> 36.268
(<r2>)1/2 6.022